Article: 102500 of rec.radio.amateur.boatanchors From: "bigter1" Subject: WTB - Cable/Connectors for Mil R392/URR receiver Date: Sun, 18 Jun 2006 12:16:18 -0500 Message-ID: <129b2jr3mm5qe4c@corp.supernews.com> Looking for power cable assy, original mil p/n CX1597/U and audio cable assy, original mil p/n CX1334/U or equivalent. If you have the mil connectors for power and audio, would take them as well to make my own cable assy. Will appreciate any responses and will answer all who respond. Terry, W5OAS Article: 102501 of rec.radio.amateur.boatanchors From: Edward Knobloch Subject: Re: test - no need to open References: <44957f79$0$12726$ecde5a14@news.coretel.net> Message-ID: Date: Sun, 18 Jun 2006 17:22:42 GMT Hi, You should be able to delete any message that you sent. Just right-click on it and hit "delete". The test message will then disappear from the newsgroup. 73, Ed Knobloch clfe wrote: > In case anyone is "reading" this, I know there is "A" group supposedly for > testing, problem is, my posts are working on SOME groups but not all. So, I > have to check to see the problem and try to resolve. Sorry for intrusion. > > Article: 102502 of rec.radio.amateur.boatanchors From: "Craig" Subject: first time amplifier use Date: Sun, 18 Jun 2006 16:53:31 -0400 Message-ID: <57614$4495bd41$4831d174$995@FUSE.NET> Hello, Yesterday at a local Hamfest I purchased my first HF amplifier (a Heathkit SB-230). I understand that the tubes for these amps is very hard to find and very expensive when you do find one (hmmm....perhaps one day sell this off for parts...the tube alone equals most of what I payed for the amp). Anyway, given these facts I am planning on babying this amp during the tuning process. I have used a club amp many years ago, so am familiar with tuning by dipping the plate, adjust load for output, repeat, etc. I am also planning on purchasing Ameritron's inrush current protector to limit wear on the amp. The final piece of hardware is a tuning pulser...Amertron has one...the ATP-102...seems a bit pricey given what it does. I already have an electronic keyer....could the same results be had by sending a string of dits at around 50 or 60WPM or is the pulser a better way to go. Also, any other tips on tuning and operating this amp? (I've read about the limited parasitic protection and am debating adding a kit to improve that or maybe just putting on new ferrite beads, but am going to take my chances for now before going that route. I need to test this amp out soon before I seller "forgets" my purchase (he gave me his call and contact number and promised a refund if I had any problems with the amp). Thanks a bunch! Craig KB8FGC Article: 102503 of rec.radio.amateur.boatanchors From: Edward Knobloch Subject: Re: first time amplifier use References: <57614$4495bd41$4831d174$995@FUSE.NET> Message-ID: Date: Sun, 18 Jun 2006 22:02:53 GMT Hi, Craig If you do a Google search for Heath SB-230, you will see a thread in the "AMPS" email reflector. Here is a synopsis of the thread: Tom Rauch W8JI reported that he once studied the SB-230 as a contract engr for Heath. He said that the grid can be easily damaged since there is no grid protection circuit at all. Load the amp heavily (pi network loading capacitor adjustment) to keep the grid current down, as a percentage of plate current. The grid dissipation rating of an 8873 is only about 5W, (60 mA grid current in the SB-230), therefore can be easily damaged. Carl KM1H said the max plate disapation rating is only about 200W using the heat sink without a fan. A fan should be added. Tom also said that a series 25 Ohm 25W resistor should be added to the B+ supply (to protect the tube in case of an internal arc). Carl said to use an enameled wirewound for this, not a cement resistor. Richard Measures said that the stock SB-230 has plate resonances near 150 MHz and a higher freq resonance which can cause "Big Bang" parasitics. In answer to your question, a c.w. keyer should work equivalently to a tuning pulser if you can reduce the "on" time of the dot keying well below 50%, and smoothly control the power output of your exciter in c.w. mode. Monitor the peak rf output with a scope. The duty cyle of the ATP-102 tuning pulser can be reduced to about 10 percent. 73, Ed Knobloch Craig wrote: > Hello, > Yesterday at a local Hamfest I purchased my first HF amplifier (a > Heathkit SB-230). I understand that the tubes for these amps is very hard > to find and very expensive when you do find one (hmmm....perhaps one day > sell this off for parts...the tube alone equals most of what I payed for the > amp). Anyway, given these facts I am planning on babying this amp during > the tuning process. I have used a club amp many years ago, so am familiar > with tuning by dipping the plate, adjust load for output, repeat, etc. I am > also planning on purchasing Ameritron's inrush current protector to limit > wear on the amp. The final piece of hardware is a tuning pulser...Amertron > has one...the ATP-102...seems a bit pricey given what it does. I already > have an electronic keyer....could the same results be had by sending a > string of dits at around 50 or 60WPM or is the pulser a better way to go. > Also, any other tips on tuning and operating this amp? (I've read about the > limited parasitic protection and am debating adding a kit to improve that or > maybe just putting on new ferrite beads, but am going to take my chances for > now before going that route. I need to test this amp out soon before I > seller "forgets" my purchase (he gave me his call and contact number and > promised a refund if I had any problems with the amp). > > Thanks a bunch! > Craig KB8FGC > > Article: 102504 of rec.radio.amateur.boatanchors From: "David Heinsohn" References: Subject: Re: Latest RADIOMART ebay scam!!! Message-ID: <4lqlg.46580$fb2.19876@newssvr27.news.prodigy.net> Date: Mon, 19 Jun 2006 05:10:24 GMT You know there is something amiss when the auctions are PRIVATE. Huh ??? He also has the BS meter pegged !! I have noticed three radios that I once had being sold excellent, totally rebuilt, blah blah. Dave "gkb" wrote in message news:p-OdnWuHF6SiowjZnZ2dnUVZ_sCdnZ2d@arcusdigital.com... > I just looked at his other auctions. The tubes he list as NOS are not. He > even lists 6146's in the title but there 6146B's. > Buyer Beware. > Regards, > Gary... > --------------------------------------------------- > "Chuck - K1KW" wrote in message > news:uKqdnegZjelTsg_ZnZ2dnUVZ_tydnZ2d@comcast.com... > > Item # 9738158955 > > > > Check this BS out! Amazing that this jerk continues to sell on Ebay with > > his obvious lies and misrepresentation. This is nothing more than a poor > > homebrew fake. I know who made it and he made a few more out of surplus > > items. RADIOMART's stories are totally made up. He has no personal > > collections, he swindles SK widows and runs another ebay name to buy on > the > > cheap and then makes up stories about the same equipment to lend > > credibility. This guy is a snake. BEWARE!!!!! > > > > > > > > Article: 102505 of rec.radio.amateur.boatanchors From: "Smokey" Subject: 3946 crystal to swap; wanted 3546 crystal Date: Mon, 19 Jun 2006 08:25:56 -0500 Message-ID: <129d9bnfcplct2e@corp.supernews.com> I have a brand new 3946 KC crystal that was ordered in error. As I operate no phone I am looking for a 3946 KC crystal. If you have one or a crystal +/- 1 KC I'd swap even-steven. Thanks Smokey telegrapher@hotmail.com Article: 102506 of rec.radio.amateur.boatanchors From: "Brian Reay" Subject: B2 Set om Ebay Message-ID: <0Fzlg.5055$t4.3851@newsfe3-win.ntli.net> Date: Mon, 19 Jun 2006 15:46:04 GMT Item number: 6638912642 Currently way under priced and the seller almost seems to be picking bidders but do have a look. (Not mine and not my sort of radio.) -- 73 Brian, G8OSN www.g8osn.org.uk Article: 102507 of rec.radio.amateur.boatanchors From: Straydog Subject: Re: first time amplifier use Date: Mon, 19 Jun 2006 16:05:20 -0400 Message-ID: References: <57614$4495bd41$4831d174$995@FUSE.NET> See below.... On Sun, 18 Jun 2006, Craig wrote: > Hello, > Yesterday at a local Hamfest I purchased my first HF amplifier (a > Heathkit SB-230). I had an SB-230 once and as a "half-gallon" DC input amp without any fan but with a small size, it worked well. Once I was off resonance and the thermal cut-out shut down the amp (would not activate the change over relay) until the heat sink cooled off (another issue you may want to be concerned in case it works or does not work). Probably the issue that is more important than anything else is that the 8873 is conduction-cooled through a beryllium "thermal link" (one inch by one inch by 1/4 inch, roughly in size, and beryllium has the novel physical property that it is one of the few materials that conducts heat but does not conduct electricity) and that beryllium metal is chemically toxic to life. Recommendations for handling beryllium includes that you do not touch it with your fingers, and you do absolutely no machining on it including drilling, filing, cutting, etc. The dust particles are even more toxic. If you go back through old QSTs or old Heathkit catalogs and pay attention to when the SB-230 was discontinued, then look in the QSTs for that date era, you will find a small announcement about the fact the Heath decided to discontinue the SB-230 because of the toxicity of that thermal link (I remember reading it myself). You can also get more recent copies of "The Handbook of Physics and Chemistry" where you will also find a disclosure about the toxicity of beryllium (you might just google the element and see if this fact shows up). I am sure that our enviroment includes all manner and well scattered pieces of toxic, dangerous solids, liquids, etc., just waiting for us to partake and get sick (read any history of Love Canal, etc., or any other serious chemical spills where people were hurt), but you might want to consider what you will do with that amplifier, someday, in the future. It does not lend itself very well to modification to some other tube (I thought about it myself). Long ago I sold my copy of the SB-230 to someone and I don't remember if it was before or after I learned about the toxicity of the thermal link, but I remember reading the very small notice in QST from Heath about the problem and that that was the reason for discontinuing the amp. There are water-cooled amplifier tube circuits that, IIRC, don't need these beryllium thermal links and you might want to look around at these for ideas. Yes, all those 887X metal-glass/ceramic tubes went up greatly in price over the years that they were being produced. Makes amps with 3-500Zs, 811s, 572-Bs look real good if you need to replace a tube or two or more. Outside of that, I never had any problem with my SB-230 and I used it a moderate amount when I had it. I understand that the tubes for these amps is very hard > to find and very expensive when you do find one (hmmm....perhaps one day > sell this off for parts...the tube alone equals most of what I payed for the > amp). Anyway, given these facts I am planning on babying this amp during > the tuning process. I have used a club amp many years ago, so am familiar > with tuning by dipping the plate, adjust load for output, repeat, etc. I am > also planning on purchasing Ameritron's inrush current protector to limit > wear on the amp. The final piece of hardware is a tuning pulser...Amertron > has one...the ATP-102...seems a bit pricey given what it does. I already > have an electronic keyer....could the same results be had by sending a > string of dits at around 50 or 60WPM or is the pulser a better way to go. > Also, any other tips on tuning and operating this amp? (I've read about the > limited parasitic protection and am debating adding a kit to improve that or > maybe just putting on new ferrite beads, but am going to take my chances for > now before going that route. I need to test this amp out soon before I > seller "forgets" my purchase (he gave me his call and contact number and > promised a refund if I had any problems with the amp). > > Thanks a bunch! > Craig KB8FGC > > > Article: 102508 of rec.radio.amateur.boatanchors From: "Jim Barnard" Subject: SB-303 Power Cord Date: Mon, 19 Jun 2006 21:27:35 -0400 Message-ID: I am still trying to locate a power cord for the SB-303; it is different than the SB-301 since is a 3-pronged cord. If you should have one available, please let me know. This is the last piece I need to complete a renovation project. Thanks, Jim Article: 102509 of rec.radio.amateur.boatanchors From: "Steven P. Burrows" Subject: Inrush Current Limiter for Hallicrafters S-40B? Message-ID: <461mg.57866$9c6.34117@dukeread11> Date: Tue, 20 Jun 2006 21:16:20 -0400 I recently completed restoring a pair of S-40B radios. The original power transformers were pretty marginal, so I replaced them with similar transformers that I bought from Antique Electronic Supply (the new xfrmrs were Fender amp replacements). Everything seemed to work ok for a couple of weeks of light use of my radio (I gave the other to my father). Last week while I was listening to my S-40B, its power supply blew a fuse (a 5A cartridge fuse that I installed in the radio). I traced the problem back to the "new" power transformer. It appeared to have a short circuit of some kind, though I could never pin down exactly where this short was using a DVM. The initial fuse blow occurred while the radio was running and my house's central air conditioner was switching on. Up to that first fuse blow, I noticed some significant flicker in the dial lamps (run off the filament winding on the power transformer). At first I thought that I was watching a dying lamp bulb, but now it seems that I was witnessing the breakdown of the power transformer. My question is, would installing an inrush current protector thermistor in the primary winding circuit of this radio prevent a repeat of the transformer breakdown? If this is a good move, what size of thermistor should I use? Any help or recommendations would be appreciated. Steve Burrows spburrows@cox.net Article: 102510 of rec.radio.amateur.boatanchors From: "JC" References: <461mg.57866$9c6.34117@dukeread11> Subject: Re: Inrush Current Limiter for Hallicrafters S-40B? Message-ID: Date: Wed, 21 Jun 2006 02:41:59 GMT "Steven P. Burrows" wrote in message news:461mg.57866$9c6.34117@dukeread11... > > My question is, would installing an inrush current protector thermistor in > the primary winding circuit of this radio prevent a repeat of the > transformer breakdown? If this is a good move, what size of thermistor > should I use? Any help or recommendations would be appreciated. > > Steve Burrows > spburrows@cox.net Steve, When I was a Novice, I used a S-40B on 80-40-15 meters CW. Boy, 15 meters CW was a challenge with that primitive receiver! They did a good job with AM broadcast however, and the audio was decent. Now the bad news. Maybe your rectifier tube showed a series of bright sparks leading to the blown fuse? If so, the B+ was being dragged down somewhere, and likely from a leaky, or shorted capacitor. It's quick and easy to pull the rectifier (5Y3??) and see if the fuse blows again. A 5 ampere fuse is pretty heavy for a S-40B, so in the future consider a 2 amp unit. If there was no short, or bad 5Y3, then your new transformer was likely marginal, and I bet would have failed regardless of what you did. That said, if large transients come down the power line, you can filter these out to a point. One option is to add a varistor across the primary leads of the transformer. These are made by GE and others, and the part number will be similar to V130LA10A. This means the part is rated for 130 volts RMS AC, and 10 Joule rated. I believe Radio Shack has these. I don't believe an inrush current limiter is a solution here. These are more useful when a big light dimming surge occurs when turning on a big Linear amplifier like the Dentron MLA-2500. Good luck with that S-40B, Jim WD5JKO Article: 102511 of rec.radio.amateur.boatanchors From: "Craig" Subject: suggested keyer weight for amp tuning Date: Wed, 21 Jun 2006 01:50:25 -0400 Message-ID: <1d868$4498de13$4831d174$28674@FUSE.NET> Hello, I have a little used MFJ-492 electronic keyer that I've decided to put to good use as an amplifier tuner. (This is my first amp). The keyer defaults to a 50% duty cycle and I would like to get this down to around 10 or 20 percent. Any suggestions on what weight to use? This keyer is adjustable from 5 to 95 percent weight...I do not have a scope so would have to guess by ear. Thanks for the help. Craig KB8FGC Article: 102512 of rec.radio.amateur.boatanchors From: Straydog Subject: Re: Inrush Current Limiter for Hallicrafters S-40B? Date: Wed, 21 Jun 2006 07:21:05 -0400 Message-ID: References: <461mg.57866$9c6.34117@dukeread11> On Tue, 20 Jun 2006, Steven P. Burrows wrote: > I recently completed restoring a pair of S-40B radios. The original power > transformers were pretty marginal, so I replaced them with similar > transformers that I bought from Antique Electronic Supply (the new xfrmrs > were Fender amp replacements). Everything seemed to work ok for a couple of > weeks of light use of my radio (I gave the other to my father). > > Last week while I was listening to my S-40B, its power supply blew a fuse (a > 5A cartridge fuse that I installed in the radio). I traced the problem back > to the "new" power transformer. It appeared to have a short circuit of some > kind, though I could never pin down exactly where this short was using a DVM. It seems to me highly unlikely that a new power transformer could develop a short circuit (somewhere in its windings) and you should look for the exact cause of the fuse blowing. Another response indicated that 5 amps is much higher than you should have, and something more like 2 amps is better. Is the new transformer a good match to the old one? Does it get very hot when it is running? Is the plate voltage about right coming out of the S-40 power supply? When you "traced the problem back to the 'new' power transformer" what was it that you traced and how? > The initial fuse blow occurred while the radio was running and my house's > central air conditioner was switching on. Up to that first fuse blow, I > noticed some significant flicker in the dial lamps (run off the filament > winding on the power transformer). At first I thought that I was watching a > dying lamp bulb, but now it seems that I was witnessing the breakdown of the > power transformer. > > My question is, would installing an inrush current protector thermistor in > the primary winding circuit of this radio prevent a repeat of the transformer > breakdown? You really should not need to go to this extreme. Think how many millions of such radios and TV sets and HiFi/stereo sets were used in the last 50-60 years with very very little problems. Only some very rare freak voltage spike might cause peak voltage on the electrolytic to go past breakdown and with a vacuum tube rectifier and some capacitance in the electrolytic, it would have to be a pretty freakish high pulse voltage for a fairly long time interval to kill whatever sections in the electrolytic cap would break down for a freak pulse. Is the receiver still blowing fuses? Is it not working any more, period? If this is a good move, what size of thermistor should I use? > Any help or recommendations would be appreciated. > > Steve Burrows > spburrows@cox.net > Article: 102513 of rec.radio.amateur.boatanchors From: "Steven P. Burrows" Subject: Re: Inrush Current Limiter for Hallicrafters S-40B? References: <461mg.57866$9c6.34117@dukeread11> Message-ID: Date: Wed, 21 Jun 2006 08:59:58 -0400 The B+ voltage delivered by the new transformer is about 50 volts higher than Hallicrafters' original spec., which I was advised was not a big problem. The other secondaries for the tube filaments and rectifier filament were exactly right. Throughout my use of this restored S-40B, I have been running it off of a personal computer grade surge suppressor power strip, along with my other old radios (others are solid state). I replaced the power supply electrolytic caps with new ones, so I doubt that this was a problem. From past experience with arcing in the rectifier tube, I also looked into this possible cause. My rectifier tube was also OK. I pulled all of the tubes from the radio and powered it up in a darkened room to attempt to see any potential arcing under the chassis. The fuse blew, and there was no visible evidence of any problems in the radio wiring. Next I disconnected the secondaries of the power transformer from the radio entirely. The fuse still blew. Next I removed the safety filter capacitors from the transformer primary circuits. Fuse still blew. I traced out the primary circuit with a DVM and found no short circuits in my wiring or from the transformer windings to each other or to the transformer frame. With the transformer completely taken out of the radio the fuse blowing stopped. I was forced to conclude that the "new" transformer was a dud. I don't have access right now to a variac, but I suspect that there might be some sort of arcing in the transformer that doesn't show up until higher voltages are applied. I still have this transformer, and I might try looking at it again later this year when I can borrow a variac >from the university where I work. I have replaced the suspect transformer and so far the radio is working fine. My interest in using inrush current limiters is motivated by trying to avoid a repeat of a damaged transformer, both in my father's S-40B or my own. In spite of having a fancy microprocessor based Sony SW-77 to do my SWLing on, I find using this old 'boatanchor' type radio irresistible. After I finish up grad school (which I am starting rather late in life - age 46) I plan to go for a ham license and possibly look into using other BA gear. Article: 102514 of rec.radio.amateur.boatanchors From: "Rev. Cleetus Poontang" References: Subject: Re: Latest RADIOMART ebay scam!!! Date: Wed, 21 Jun 2006 09:36:10 -0400 Message-ID: <1bdce$44994b3c$d1cc5812$23997@snip.allthenewsgroups.com> "Chuck - K1KW" wrote in message news:uKqdnegZjelTsg_ZnZ2dnUVZ_tydnZ2d@comcast.com... > Item # 9738158955 > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=9738158955 > Check this BS out! Amazing that this jerk continues to sell on Ebay with > his obvious lies and misrepresentation. This is nothing more than a poor > homebrew fake. I know who made it and he made a few more out of surplus > items. RADIOMART's stories are totally made up. He has no personal > collections, he swindles SK widows and runs another ebay name to buy on the > cheap and then makes up stories about the same equipment to lend > credibility. This guy is a snake. BEWARE!!!!! > > > There's one born every minute. (Especially on E-Screw!) Anyone who would buy ham gear on e-Bay deserves to be taken. Article: 102515 of rec.radio.amateur.boatanchors From: "Frank Dresser" References: <461mg.57866$9c6.34117@dukeread11> Subject: Re: Inrush Current Limiter for Hallicrafters S-40B? Message-ID: Date: Wed, 21 Jun 2006 14:26:20 GMT "Steven P. Burrows" wrote in message news:lpbmg.57892$9c6.52561@dukeread11... > The B+ voltage delivered by the new transformer is about 50 volts higher > than Hallicrafters' original spec., which I was advised was not a big > problem. The other secondaries for the tube filaments and rectifier > filament were exactly right. The "not a problem" transformer had a B+ of 25 V lower. Last year you wrote: "I have looked over the offerings from Antique Electronics Supply, and their Fender transformers are a close match. Unfortunately, the Fender transformers offered there top out at 325-0-325 V for the secondary windings. I need a transformer with 350-0-350 V / 70 mA, 5 VAC / 2A, and 6.3 VAC / 2.6A secondary windings. " http://groups.google.com/group/rec.radio.amateur.boatanchors/browse_frm/thread/c6217b73861cfaff/8bae22ac314cd44b#8bae22ac314cd44b > > Throughout my use of this restored S-40B, I have been running it off of > a personal computer grade surge suppressor power strip, along with my > other old radios (others are solid state). > > I replaced the power supply electrolytic caps with new ones, so I doubt > that this was a problem. From past experience with arcing in the > rectifier tube, I also looked into this possible cause. My rectifier > tube was also OK. Be sure your power supply electrolytics can take the peak rectified B+. If your new transformer is really putting out 375 V, the peak voltage is 525 V. I'd be alot more comfortable if the B+ voltage was at the original spec or a little below. > > I pulled all of the tubes from the radio and powered it up in a darkened > room to attempt to see any potential arcing under the chassis. The fuse > blew, and there was no visible evidence of any problems in the radio wiring. > > Next I disconnected the secondaries of the power transformer from the > radio entirely. The fuse still blew. > > Next I removed the safety filter capacitors from the transformer primary > circuits. Fuse still blew. I traced out the primary circuit with a DVM > and found no short circuits in my wiring or from the transformer > windings to each other or to the transformer frame. With the transformer > completely taken out of the radio the fuse blowing stopped. I was > forced to conclude that the "new" transformer was a dud. Sure sounds like it. > > I don't have access right now to a variac, but I suspect that there > might be some sort of arcing in the transformer that doesn't show up > until higher voltages are applied. I still have this transformer, and I > might try looking at it again later this year when I can borrow a variac > from the university where I work. You can usually hear arcing. Smoke might also start coming out. It sounds like you've got a dead short. There's a chance you might find it if you take off the endbell and inspect the area carefully. Don't count on it. > > I have replaced the suspect transformer and so far the radio is working > fine. My interest in using inrush current limiters is motivated by > trying to avoid a repeat of a damaged transformer, both in my father's > S-40B or my own. > > In spite of having a fancy microprocessor based Sony SW-77 to do my > SWLing on, I find using this old 'boatanchor' type radio irresistible. > After I finish up grad school (which I am starting rather late in life - > age 46) I plan to go for a ham license and possibly look into using > other BA gear. The S-40s are decent beginner radios in that they do work and they aren't too hard to work on. But there are better radios out there! Frank Dresser Article: 102516 of rec.radio.amateur.boatanchors From: "Frank Dresser" References: <461mg.57866$9c6.34117@dukeread11> Subject: Re: Inrush Current Limiter for Hallicrafters S-40B? Message-ID: Date: Wed, 21 Jun 2006 14:54:20 GMT "Steven P. Burrows" wrote in message news:461mg.57866$9c6.34117@dukeread11... > I recently completed restoring a pair of S-40B radios. The original > power transformers were pretty marginal, so I replaced them with similar > transformers that I bought from Antique Electronic Supply (the new > xfrmrs were Fender amp replacements). Everything seemed to work ok for > a couple of weeks of light use of my radio (I gave the other to my father). > > Last week while I was listening to my S-40B, its power supply blew a > fuse (a 5A cartridge fuse that I installed in the radio). I traced the > problem back to the "new" power transformer. It appeared to have a > short circuit of some kind, though I could never pin down exactly where > this short was using a DVM. I've been using a 1A quick blow in my S-40A. Hasn't blown in six years of semi-regular use. I used an analog AC current meter to estimate the fuse value. My S-40A would always draw well under an amp except when I was hot switching it. I had some 1A fuses handy so I tried one. I would have raised the current rating if the fuse seemed touchy, but it seems to have worked well. The radio normally draws something like 60-70 watts. 1A at 120V is 120 watts. 5A at 120V is 600 watts. > > The initial fuse blow occurred while the radio was running and my > house's central air conditioner was switching on. Up to that first fuse > blow, I noticed some significant flicker in the dial lamps (run off the > filament winding on the power transformer). At first I thought that I > was watching a dying lamp bulb, but now it seems that I was witnessing > the breakdown of the power transformer. > > My question is, would installing an inrush current protector thermistor > in the primary winding circuit of this radio prevent a repeat of the > transformer breakdown? If this is a good move, what size of thermistor > should I use? Any help or recommendations would be appreciated. > Inrush current limiters are thermistors which have a higher cold resistance than thier hot resistance. They limit current surges until they warm up and then they have little effect. In your case, the radio would have been operating and the current limiter would already have been hot. A inrush current limiter would have made no difference. Inrush current limiters really don't make much difference with equipment which uses a rectifier tube, anyway. The tube gives an even gentler B+ startup than a inrush current limiter. The current limiter might help protect tube heaters. I've experimented with inrush current limiters on both transformer sets and series string sets. In both instances the dial lamps would come up more gently. I don't think they make alot of practical difference with transformer sets, but they might help protect the abused heaters in a series string radio. > Steve Burrows > spburrows@cox.net Frank Dresser Article: 102517 of rec.radio.amateur.boatanchors From: Edward Knobloch Subject: Re: suggested keyer weight for amp tuning References: <1d868$4498de13$4831d174$28674@FUSE.NET> Message-ID: Date: Wed, 21 Jun 2006 15:23:05 GMT Hi, Craig Sounds like 50% keyer "weight" would be the same as 50% duty factor. If you have an analog Ohmmeter, you can use that to check the weight. Assuming the red lead of the Ohmmeter puts out + volts, connect it to the + keying output ("direct" output of the MFJ-492), with the black Ohmmeter lead to ground. With Ohmmeter set to RX100, set keyer to "tune" and adjust Ohmmeter to zero Ohms. Key the keyer at high speed, 50% weighting, the Ohmmeter pointer should be at half-scale of the Ohmmeter with a string of dits. 20% weighting should be 20% of full scale. If your analog Ohmmeter scale shows 20 Ohms at half scale, it may indicate about 100 Ohms at the 20% of full scale point. If you don't have a scope to use the pulse tuning method, do you have a peak-reading rf Wattmeter? 73, Ed Knobloch Craig wrote: > Hello, I have a little used MFJ-492 electronic keyer that I've decided to > put to good use as an amplifier tuner. (This is my first amp). The keyer > defaults to a 50% duty cycle and I would like to get this down to around 10 > or 20 percent. Any suggestions on what weight to use? This keyer is > adjustable from 5 to 95 percent weight...I do not have a scope so would have > to guess by ear. Thanks for the help. > Craig KB8FGC > > Article: 102518 of rec.radio.amateur.boatanchors Message-ID: <4499666D.5020906@worldnet.att.net> From: Al Schapira Subject: FS: Original Heathkit frequency counter manuals Date: Wed, 21 Jun 2006 15:30:13 GMT The following are original Heathkit Operation/Service factory manuals, not copies. They include schematics and PCB X-ray views. Very good condition. Prices include postage to a US address. Thanks for looking. -Al Schapira, W2ADS, a.d.schapira@worldnet.att.net =========================================================== Heathkit SM-118A Autoranging Frequency Counter manual 595-1525-01, 13 pgs, factory manual, no assembly instructions. Includes schematic. Very good. $6. See http://home.att.net/~a.schapira/Heath/SM-118A-1.jpg http://home.att.net/~a.schapira/Heath/SM-118A-2.jpg Heathkit SM-128A Autoranging Frequency Counter manual 595-1556, 14 pgs, factory manual, no assembly instructions. Includes schematic. Very good. $6. See http://home.att.net/~a.schapira/Heath/SM-128A-1.jpg http://home.att.net/~a.schapira/Heath/SM-128A-2.jpg Both for $10 post-paid. =========================================================== Article: 102519 of rec.radio.amateur.boatanchors Message-ID: <44996761.1020808@worldnet.att.net> From: Al Schapira Subject: FS: Old "73" ham radio magazine, misc issues '77 -'84 Date: Wed, 21 Jun 2006 15:34:17 GMT FS: "73" issues below. All in good condition. Thanks for looking. -Al Schapira, W2ADS, a.d.schapira@worldnet.att.net =========================================================== September, 1977 http://home.att.net/~a.schapira/73/73-0977.jpg September, 1980 http://home.att.net/~a.schapira/73/73-0980.jpg September, 1982, http://home.att.net/~a.schapira/73/73-0982.jpg November, 1984, http://home.att.net/~a.schapira/73/73-1184.jpg $5 each post-paid to a US address. $15 for all four. =========================================================== Article: 102520 of rec.radio.amateur.boatanchors Message-ID: <44996839.8000304@worldnet.att.net> From: Al Schapira Subject: FS: Original old Lafayette Radio Electronics catalogs; 1965, 1966 Date: Wed, 21 Jun 2006 15:37:53 GMT For sale: Four original old Lafayette Radio Electronics catalogs in very good condition. All include original attached order blank and return envelope. =========================================================== Lafayette Radio Electronics Holiday gift catalog # 661, 1965. Very good condition. 108 pgs. 6 1/2 x 9 1/4. http://home.att.net/~a.schapira/Lafayette/L-661.jpg $7, includes postage. Lafayette Radio Electronics Winter catalog # 662, 1965. Very good condition. 108 pgs. 6 1/2 x 9 1/4. http://home.att.net/~a.schapira/Lafayette/L-662.jpg $7, includes postage. Lafayette Radio Electronics Summer 1966 catalog # 664, 1966. Very good condition. 110 pgs. 6 1/2 x 9 1/4. http://home.att.net/~a.schapira/Lafayette/L-664.jpg $7, includes postage. Lafayette Radio Electronics 50th Golden Jubilee catalog # 710, 1971. Very good condition. 468 pgs. 6 1/4 x 8 1/4. http://home.att.net/~a.schapira/Lafayette/L-710.jpg $12, includes postage. =========================================================== All four for $30. Prices include postage to a US address. Thanks for looking. -Al Schapira, W2ADS, a.d.schapira@worldnet.att.net Article: 102522 of rec.radio.amateur.boatanchors Message-ID: <4499699F.7010000@worldnet.att.net> From: Al Schapira Subject: FS: Old National Radio Institute (NRI) publications Date: Wed, 21 Jun 2006 15:43:51 GMT For sale: Four original old National Radio Institute (NRI) publications in good condition. Prices include postage to a US address. Thanks for looking. -Al Schapira, W2ADS, a.d.schapira@worldnet.att.net =========================================================== (1924 NRI) "Lesson 1 of a Complete Course in Radio Telegraphy and Telephony", Tenth Edition, Copyright by National Radio Institute, Inc, Washington, D.C., 6x9, 64 pgs, softcover, covered with cardboard and brown paper by original owner, perfect inside. Contains some great photographs. http://home.att.net/~a.schapira/NRI/Lesson1-1.jpg http://home.att.net/~a.schapira/NRI/Lesson1-2.jpg $7 post-paid. $10 post-paid for both this and Lesson 2, below. (1924 NRI) "Lesson 2 of a Complete Course in Radio Telegraphy and Telephony" --'Electrical Units and Circuits, The Electric Current, Switches, Insulators, Conductors and Circuit Breakers', Tenth Edition, Copyright by National Radio Institute, Inc, Washington, D.C., 6x9, 59 pgs, softcover, covered with cardboard and brown paper by original owner, perfect inside. http://home.att.net/~a.schapira/NRI/Lesson2-1.jpg $7 post-paid. $10 post-paid for both this and Lesson 1, above. NRI Radio-Television-Electronics Dictionary, IX-3, 1951. Excellent condition. 96 pgs. 5 3/4 x 8 1/2. http://home.att.net/~a.schapira/NRI/Dictionary.jpg $7 post-paid. NRI "Instructions for Operating the NRI Professional Signal Tracer". Undated. Includes schematic. Very good condition. 14 pgs. 8 1/2 x 11. http://home.att.net/~a.schapira/NRI/Model33-1.jpg http://home.att.net/~a.schapira/NRI/Model33-2.jpg $7 post-paid. =========================================================== $20 post-paid for all four. Article: 102523 of rec.radio.amateur.boatanchors From: Edward Knobloch Subject: a complaint from Samuel F.B. Morse about the "Da Vinci Code" movie Message-ID: Date: Wed, 21 Jun 2006 18:18:00 GMT Hi, Gang This is pretty funny: http://www.theonion.com/content/node/49431 73, Ed Knobloch Article: 102524 of rec.radio.amateur.boatanchors From: "WB8ICT" Subject: WTB TEK 2247A LID or Front Cover Message-ID: Date: Wed, 21 Jun 2006 20:51:46 GMT I am looking for the plastic Tektronics cover for this scope. Will pay reasonable price for one. Email details. Thanks REMOVE NOSPAM from reply address WB8ICT.NOSPAM@arrl.net Article: 102525 of rec.radio.amateur.boatanchors From: chris+news@suslowicz.org (Chris Suslowicz) Subject: Re: Help Please to identify this old ex WD "Receiver" Date: Thu, 22 Jun 2006 20:59:26 +0100 Message-ID: References: <1150914118.701837.235300@i40g2000cwc.googlegroups.com> "ron_ayling" wrote: >Hi, I've recently purchased what looks like an old Ex WD unit, with no >identity plates, and I'd really like to identify it, I'm sure its a >receiver though it could be a converter of some description, quite >large front panel 280 by 170mm 300mm deep, centre left of the front >panel are three controls marked Aerial RF and Oscillator, each having a >little window that clicks round 0 to 9, to the right is a paxolin >panel with test points marked V1 to V10, bottom of panel sockets left >to right marked RF input, Output, Power Input, Gain control, inside the >three front panel controls connect to what looks like a front end box >which held two valves marked VR138 and VR137, there are then six IF >cans with a single coil inside and six valve holders alongside marked >VR65... With those valves, it's ex-RAF, probably late WW2 to 1950s vintage. VR137 is an EC52 low power VHF transmitting triode on B9G base. VR138 is unlisted in anything I have to hand, unfortunately. VR65 is an SP61 pentode (100MHz max frequency) on Maxda Octal base. The EC52 is capable of 7 watts and 300MHz, so it's a transceiver or transponder of some sort, I'd guess. (Possibly IFF?) Hope this is some help, Chris. Article: 102526 of rec.radio.amateur.boatanchors From: Straydog Subject: FS: Various stuff.... Date: Fri, 23 Jun 2006 09:27:31 -0400 Message-ID: References: Pure sale, no bidding wars. Summer cleaning out the shack: several items (terms at end) 1. (dead on transmit) RF Concepts, RFC 2-317 (2 meter brick amplifier), 30 watts drive, 170 watts output. The transmit side of the amp is dead (looked like power transistors gave out over a few minutes of transmit way back and I never tried to locate someone to fix it; the receive GasFET preamp still works). The manual goes with the brick amp. The schematic says the power transistors (assuming that is the problem) are SRF3897 and there are two of them. Schematic looks like two in parallel (many other transistors, too). RF Concepts went out of business some years ago but maybe one of you guys who knows this stuff would like to have a crack at this repair job. $10 for this unit. 2. Two Hamtronics receiving converters, CA-28 and CA-144. One takes input at 144 - 148 and converts down to 28-32 mHz (and I put a 9 volt battery case inside, and small toggle switch), the other one takes 28-30 mHz and upconverts to 144-148 mHz (I was meaning to listen to 10 meters FM repeaters with my 2 m HT but never tried it). These units do not have as low of a noise figure as the best scanners and newer ham transceivers. Both units to the same address, $35 for both. Otherwise $20 each. With manuals and documentation. 3. Yaesu YS-500 in line wattmeter and SWR bridge for 140-525 mHz. Looks fine, works fine. Max power: 200 w. With one sheet "manual" $30. 4. 440 FM Yagi, 10 elements. I think it might be a Hygain but can't remember for sure. No manual or documentation. It was never outside of an attic. At old OTH it was aimed at one 440 repeater (at present QTH, I have way too many trees and barely can get into one 440 repeater that almost no one uses, so it goes 'on the block'). $25. ---non ham electronics------ 5. OPTIMUS (Radio shack) AM/FM STA-795 solid state receiver, with manual and documentation. Works fine. $20.00 6. Night vision device: NV-100/NV-100-1 by Moonlight Products, bought through Edmund Scientifi when it was in business. I need to test it at night before releasing it. I think its a first generation device. Has a large telephoto lens with low f/stop, includes manual and documentation. Runs on two AA batteries, and has its own IR diode light souce if one wants to try that. Has not been used for maybe 7-8 years, but worked fine at the time, and was always stored in a stable non-moist room at RT. Was not used much when it was used (maybe 1-2 hours, total). I seem to recall reading that these units undergo some deterioration in performance with time, but I don't know if that is independent of whether the units are used or not used. $40 7. Panasonic AG-1830, Video Cassette Recorder, Pro-Line, commercial grade. With manual. Used a lot back 10 years ago, not much since then. It has an on-board frame-grabber, but I have lost the remote control which is how the frame-grabber was activated. Complex controls and relatively thick manual. 17 lbs. Some dust here and there. I have not extensively tested all functionalities, but besides the missing remote control, it was recording and playing back last time I used it. But if you want to receive TV signals and record them, you may need a preamp because the input is normally not very sensitive. I was in a fringe area and got noisy images unless I used a TV receiver preamp. New price over $1000. My price $55 8. Hitachi VHS video camera (portable), VM-2500A, with dead lead-acid gel-cell battery (will not hold charge, won't accept charge). Camera (color) still works fine and records audio, too. It runs fine with an external DC power supply of about 9.6 volts 2.3 amps. This is an old style, over the shoulder unit. With manual and documentation, and some cables (can take output from camera, in playback mode, and feed into a video imput device). I think its never had more than about 20-25 hours of running time. My price $30. ------ Terms: If you are interested, send email. I prefer to sell in the continental USA. I prefer to ship USPS, but UPS may be less risky in terms of damage. I prefer USPS money order for sum. Sum needs to include shipping charges which I will estimate, and I'll refund any excess if there is excess. If you want insurance, I'll include that in price. No charge for packaging, handling, which will depend on what item we're talking about and I'll do my best to locate packing materials, especially on biger & heavier items. If we go with USPS, I will spring for delivery confirmation and email you the DC number. You'll need to send the money order first. I am located in southern Delaware. Please wait a few days before expecting a response. In the event more than one person wants the same item, I will work with the first one and tell the others that they are "backup" buyers in case the first one backs out or something. You need to specify how fast you want the shipping to be; UPS and USPS have several grades of service speed (faster is more expensive). If you have a counter-proposal, I'll consider it. Please give you "ship to" address in your first email to me. On the non-ham gear, I will probably "check" the unit to make sure it is at least minimally functional before shipping. Art, W4PON Article: 102527 of rec.radio.amateur.boatanchors From: "Steve N." Subject: Re: a complaint from Samuel F.B. Morse about the "Da Vinci Code" movie Date: Fri, 23 Jun 2006 16:18:51 -0500 Message-ID: References: 'Tiz Cute... 73, Steve, K9DCI "Edward Knobloch" wrote in message news:s3gmg.14027$XJ4.9602@trndny02... > Hi, Gang > > This is pretty funny: > > http://www.theonion.com/content/node/49431 > > 73, > Ed Knobloch Article: 102528 of rec.radio.amateur.boatanchors From: Straydog Subject: Re: FS: Various stuff.... Date: Fri, 23 Jun 2006 19:56:13 -0400 Message-ID: References: (see original post farther down) Update (as of 7:40 pm): I have a pending deal for the night vision scope and the RFC brick amplifier. If the deal with those interested parties falls through, I will make an re-announcement. I forgot one more item: a single pan, digital balance (transistorized), Its an "Ohaus" model C305, and reads in grams or ounces. It has a calibration weight (300 g), a wall plug transformer supply, and can run off an internal 9 volt standard transistor battery. And, yes, the manual comes with it. It also has a button for "tare" weight (eg. put an empty container on, press "tare" and it re-zeros the digital readout. The pan comes off the unit for shipping, and just drops on. I was using it to weigh letters and small packages. Now I have some new scales for that. My price: $20. Art, W4PON ===== no change to below, included for reference and context ===== On Fri, 23 Jun 2006, Straydog wrote: > > Pure sale, no bidding wars. > > Summer cleaning out the shack: several items > (terms at end) > > > 1. (dead on transmit) RF Concepts, RFC 2-317 (2 meter brick amplifier), 30 > watts drive, 170 watts output. The transmit side of the amp is dead (looked > like power transistors gave out over a few minutes of transmit way back and I > never tried to locate someone to fix it; the receive GasFET preamp still > works). The manual goes with the brick amp. The schematic says the power > transistors (assuming that is the problem) are SRF3897 and there are two of > them. Schematic looks like two in parallel (many other transistors, too). RF > Concepts went out of business some years ago but maybe one of you guys who > knows this stuff would like to have a crack at this repair job. $10 for this > unit. > > > 2. Two Hamtronics receiving converters, CA-28 and CA-144. One takes input at > 144 - 148 and converts down to 28-32 mHz (and I put a 9 volt battery case > inside, and small toggle switch), the other one takes 28-30 mHz and > upconverts to 144-148 mHz (I was meaning to listen to 10 meters FM repeaters > with my 2 m HT but never tried it). These units do not have as low of a noise > figure as the best scanners and newer ham transceivers. Both units to the > same address, $35 for both. Otherwise $20 each. With manuals and > documentation. > > 3. Yaesu YS-500 in line wattmeter and SWR bridge for 140-525 mHz. Looks fine, > works fine. Max power: 200 w. With one sheet "manual" $30. > > 4. 440 FM Yagi, 10 elements. I think it might be a Hygain but can't remember > for sure. No manual or documentation. It was never outside of an attic. At > old OTH it was aimed at one 440 repeater (at present QTH, I have way too many > trees and barely can get into one 440 repeater that almost no one uses, so it > goes 'on the block'). $25. > > ---non ham electronics------ > > 5. OPTIMUS (Radio shack) AM/FM STA-795 solid state receiver, with manual and > documentation. Works fine. $20.00 > > 6. Night vision device: NV-100/NV-100-1 by Moonlight Products, bought through > Edmund Scientifi when it was in business. I need to test it at night before > releasing it. I think its a first generation device. Has a large telephoto > lens with low f/stop, includes manual and documentation. Runs on two AA > batteries, and has its own IR diode light souce if one wants to try that. Has > not been used for maybe 7-8 years, but worked fine at the time, and was > always stored in a stable non-moist room at RT. Was not used much when it was > used (maybe 1-2 hours, total). I seem to recall reading that these units > undergo some deterioration in performance with time, but I don't know if that > is independent of whether the units are used or not used. $40 > > 7. Panasonic AG-1830, Video Cassette Recorder, Pro-Line, commercial grade. > With manual. Used a lot back 10 years ago, not much since then. It has an > on-board frame-grabber, but I have lost the remote control which is how the > frame-grabber was activated. Complex controls and relatively thick manual. 17 > lbs. Some dust here and there. I have not extensively tested all > functionalities, but besides the missing remote control, it was recording and > playing back last time I used it. But if you want to receive TV signals and > record them, you may need a preamp because the input is normally not very > sensitive. I was in a fringe area and got noisy images unless I used a TV > receiver preamp. New price over $1000. My price $55 > > 8. Hitachi VHS video camera (portable), VM-2500A, with dead lead-acid > gel-cell battery (will not hold charge, won't accept charge). Camera (color) > still works fine and records audio, too. It runs fine with an external DC > power supply of about 9.6 volts 2.3 amps. This is an old style, over the > shoulder unit. With manual and documentation, and some > cables (can take output from camera, in playback mode, and feed into > a video imput device). I think its never had more than about 20-25 hours of > running time. My price $30. > > ------ > Terms: > > If you are interested, send email. I prefer to sell in the continental USA. I > prefer to ship USPS, but UPS may be less risky in terms of damage. I prefer > USPS money order for sum. Sum needs to include shipping charges which I will > estimate, and I'll refund any excess if there is > excess. If you want insurance, I'll include that in price. No charge for > packaging, handling, which will depend on what item we're talking about and > I'll do my best to locate packing materials, especially on biger & heavier > items. If we go with USPS, I will spring for delivery confirmation > and email you the DC number. You'll need to send the money order first. > > > I am located in southern Delaware. Please wait a few days before expecting > a response. In the event more than one person wants the same item, I will > work with the first one and tell the others that they are "backup" buyers > in case the first one backs out or something. You need to specify how fast > you want the shipping to be; UPS and USPS have several grades of service > speed (faster is more expensive). If you have a counter-proposal, I'll > consider it. Please give you "ship to" address in your first email to me. > On the non-ham gear, I will probably "check" the unit to make sure it is > at least minimally functional before shipping. > > Art, W4PON > Article: 102529 of rec.radio.amateur.boatanchors From: Straydog Subject: Update on this-->Re: FS: Various stuff.... Date: Fri, 23 Jun 2006 22:06:25 -0400 Message-ID: References: (~10 pm, local time) The 440 beam is sold. On Fri, 23 Jun 2006, Straydog wrote: > (see original post farther down) > > Update (as of 7:40 pm): I have a pending deal for the night vision scope and > the RFC brick amplifier. If the deal with those interested parties falls > through, I will make an re-announcement. > > I forgot one more item: a single pan, digital balance (transistorized), Its > an "Ohaus" model C305, and reads in grams or ounces. It has a calibration > weight (300 g), a wall plug transformer supply, and can run off an internal 9 > volt standard transistor battery. And, yes, the manual > comes with it. It also has a button for "tare" weight (eg. put an empty > container on, press "tare" and it re-zeros the digital readout. The pan comes > off the unit for shipping, and just drops on. I was using it to weigh letters > and small packages. Now I have some new scales for that. My price: $20. > > Art, W4PON > > ===== no change to below, included for reference and context ===== > > On Fri, 23 Jun 2006, Straydog wrote: > >> >> Pure sale, no bidding wars. >> >> Summer cleaning out the shack: several items >> (terms at end) >> >> >> 1. (dead on transmit) RF Concepts, RFC 2-317 (2 meter brick amplifier), 30 >> watts drive, 170 watts output. The transmit side of the amp is dead (looked >> like power transistors gave out over a few minutes of transmit way back and >> I never tried to locate someone to fix it; the receive GasFET preamp still >> works). The manual goes with the brick amp. The schematic says the power >> transistors (assuming that is the problem) are SRF3897 and there are two of >> them. Schematic looks like two in parallel (many other transistors, too). >> RF Concepts went out of business some years ago but maybe one of you guys >> who knows this stuff would like to have a crack at this repair job. $10 for >> this unit. >> >> >> 2. Two Hamtronics receiving converters, CA-28 and CA-144. One takes input >> at 144 - 148 and converts down to 28-32 mHz (and I put a 9 volt battery >> case inside, and small toggle switch), the other one takes 28-30 mHz and >> upconverts to 144-148 mHz (I was meaning to listen to 10 meters FM >> repeaters with my 2 m HT but never tried it). These units do not have as >> low of a noise figure as the best scanners and newer ham transceivers. Both >> units to the same address, $35 for both. Otherwise $20 each. With manuals >> and documentation. >> >> 3. Yaesu YS-500 in line wattmeter and SWR bridge for 140-525 mHz. Looks >> fine, works fine. Max power: 200 w. With one sheet "manual" $30. >> >> 4. 440 FM Yagi, 10 elements. I think it might be a Hygain but can't >> remember for sure. No manual or documentation. It was never outside of an >> attic. At old OTH it was aimed at one 440 repeater (at present QTH, I have >> way too many trees and barely can get into one 440 repeater that almost no >> one uses, so it goes 'on the block'). $25. >> >> ---non ham electronics------ >> >> 5. OPTIMUS (Radio shack) AM/FM STA-795 solid state receiver, with manual >> and documentation. Works fine. $20.00 >> >> 6. Night vision device: NV-100/NV-100-1 by Moonlight Products, bought >> through Edmund Scientifi when it was in business. I need to test it at >> night before releasing it. I think its a first generation device. Has a >> large telephoto lens with low f/stop, includes manual and documentation. >> Runs on two AA batteries, and has its own IR diode light souce if one wants >> to try that. Has not been used for maybe 7-8 years, but worked fine at the >> time, and was always stored in a stable non-moist room at RT. Was not used >> much when it was used (maybe 1-2 hours, total). I seem to recall reading >> that these units undergo some deterioration in performance with time, but I >> don't know if that is independent of whether the units are used or not >> used. $40 >> >> 7. Panasonic AG-1830, Video Cassette Recorder, Pro-Line, commercial grade. >> With manual. Used a lot back 10 years ago, not much since then. It has an >> on-board frame-grabber, but I have lost the remote control which is how the >> frame-grabber was activated. Complex controls and relatively thick manual. >> 17 lbs. Some dust here and there. I have not extensively tested all >> functionalities, but besides the missing remote control, it was recording >> and playing back last time I used it. But if you want to receive TV signals >> and record them, you may need a preamp because the input is normally not >> very sensitive. I was in a fringe area and got noisy images unless I used a >> TV receiver preamp. New price over $1000. My price $55 >> >> 8. Hitachi VHS video camera (portable), VM-2500A, with dead lead-acid >> gel-cell battery (will not hold charge, won't accept charge). Camera >> (color) still works fine and records audio, too. It runs fine with an >> external DC power supply of about 9.6 volts 2.3 amps. This is an old style, >> over the shoulder unit. With manual and documentation, and some >> cables (can take output from camera, in playback mode, and feed into >> a video imput device). I think its never had more than about 20-25 hours of >> running time. My price $30. >> >> ------ >> Terms: >> >> If you are interested, send email. I prefer to sell in the continental USA. >> I prefer to ship USPS, but UPS may be less risky in terms of damage. I >> prefer USPS money order for sum. Sum needs to include shipping charges >> which I will estimate, and I'll refund any excess if there is >> excess. If you want insurance, I'll include that in price. No charge for >> packaging, handling, which will depend on what item we're talking about and >> I'll do my best to locate packing materials, especially on biger & heavier >> items. If we go with USPS, I will spring for delivery confirmation >> and email you the DC number. You'll need to send the money order first. >> >> >> I am located in southern Delaware. Please wait a few days before expecting >> a response. In the event more than one person wants the same item, I will >> work with the first one and tell the others that they are "backup" buyers >> in case the first one backs out or something. You need to specify how fast >> you want the shipping to be; UPS and USPS have several grades of service >> speed (faster is more expensive). If you have a counter-proposal, I'll >> consider it. Please give you "ship to" address in your first email to me. >> On the non-ham gear, I will probably "check" the unit to make sure it is >> at least minimally functional before shipping. >> >> Art, W4PON >> > Article: 102530 of rec.radio.amateur.boatanchors From: "David Austerman" Subject: WTB: 6BQ5/EL84 NOS tube (GE,Philips,etc) Date: Sat, 24 Jun 2006 03:46:00 +0000 (UTC) Message-ID: <430602e1a59381e61d9a949523ee5861.32924@mygate.mailgate.org> Looking for above in something like GE, Philips, whatever. Could use a few singles but don't need matched pairs. Not really interested in the new ones like sovtek and don't really want to pay $100 dollar a piece crazy price for them. I really am seeing some of these getting too expensive out there. Thanks for reading... 73, dave austerman -- Posted via Mailgate.ORG Server - http://www.Mailgate.ORG Article: 102531 of rec.radio.amateur.boatanchors From: " Ron in Radio Heaven" Subject: Hard to find 2 pin panel mount mic connectors, SPECIAL PRICE. Message-ID: <4bcng.8097$R26.190@tornado.southeast.rr.com> Date: Sat, 24 Jun 2006 14:42:08 GMT Hard to find 2 pin panel mount mic connectors, SPECIAL PRICE. SPECIAL PRICE now 2 for $5 while supply lasts. CONUS postage included in price. Photos and ordering instructions are here, http://radioheaven.homestead.com/2pinmicplug.html 73, Ron kc4yoy -- Radio Collection Web Page, http://www.radioheaven.homestead.com WANTED! http://radioheaven.homestead.com/grknob.html Article: 102532 of rec.radio.amateur.boatanchors From: "Charlie Hugg" Subject: FA Drake Rare TR-6 and more Vinatage gear/ending soon Message-ID: Date: Sat, 24 Jun 2006 11:14:56 -0500 Please see my auctions ending soon for a nice Drake TR-6, Collins 312B-4, Drake TR7/R7 Filters, Colling S-Line parts, Hallicrafters SX-96, Shure 55 mics, and more. See at: http://search.ebay.com/_W0QQfgtpZ1QQfrppZ25QQsassZhugQ2daQ2dbug Thanks, Charlie Hugg, K5MBX ________________________________ See my Signal/One, Collins & Drake Photo Galleries and my Hallicrafters Virtual Museum at http://hug-a-bug.com Article: 102533 of rec.radio.amateur.boatanchors From: Dave Hildebrand Subject: NEW (MOTOROLA) MX300 WEB SITE / SUPPORT FORUM Date: Sat, 24 Jun 2006 10:40:38 -0700 Message-ID: Some of us have just started a support new group and web site (including a forum/BBS) for the Motorola MX300 radio: http://www.mx300.org And: http://forum.mx300.org Check it out! ...Dave, N6BHU Article: 102534 of rec.radio.amateur.boatanchors From: "Charlie Hugg" Subject: Wanted 4kHz filter for R-390A Message-ID: Date: Sat, 24 Jun 2006 22:17:29 -0500 Does anyone have a good 4 kHz Collins Filter for the R-390A Receiver for sale? It is a F455N-40 P/N 526-9160-000. Thanks, Charlie Hugg, K5MBX ________________________________ See my Signal/One, Collins & Drake Photo Galleries and my Hallicrafters Virtual Museum at http://hug-a-bug.com