Article: 94464 of rec.radio.amateur.homebrew From: Jock. Subject: Re: Recommended reading for _REAL_ Radio Hams Date: Sun, 25 Sep 2005 13:58:01 +0000 Message-ID: References: <1127483205.631008.176790@g43g2000cwa.googlegroups.com> <1127536110.784761.233910@f14g2000cwb.googlegroups.com> <1127537443.215833.25250@f14g2000cwb.googlegroups.com> <433544dc.321584@news.iol.ie> <1127566840.773374.256800@z14g2000cwz.googlegroups.com> <1127635708.655103.276410@g14g2000cwa.googlegroups.com> On 25 Sep 2005 01:08:28 -0700, "Andrew VK3BFA" wrote: >> >Hey, who cares.....if you want to know more, you will pursue it. If you >> >dont, you wont. leave politics to the politicians. Read some more, >> >build something, enjoy yourself, whatever. >> >> How about learning how to punctuate? >Why - cant you understand what I is saying? Perfektly cleer what you is trying to say, just looks quite illiterate. 73 de Jock. -- Clouseau: 'Does your dog bite?' Man: 'No.' Dog savages Clouseau. Clouseau: 'I thought you said your dog didn't bite.' Man: 'That wasn't my dog.' Article: 94465 of rec.radio.amateur.homebrew From: Darko <9a3li_makni_@hamradio.hr> Subject: Re: OT: Motorola R2001x Date: Sun, 25 Sep 2005 16:00:02 +0200 Message-ID: References: Thanks for answers. Problem here is thet when I turn it ON, can heard tone (cca 800-1000hz) from speaker and nothing else, no picture on screen, no change mode or anything. Any tips ? Article: 94466 of rec.radio.amateur.homebrew From: "jm" References: Subject: Re: OT: Motorola R2001x Message-ID: <78BZe.36316$Tf5.12991@newsread1.mlpsca01.us.to.verio.net> Date: Sun, 25 Sep 2005 13:29:36 -0400 "Darko" <9a3li_makni_@hamradio.hr> wrote in message news:dh6ah9$sco$1@ss405.t-com.hr... > Thanks for answers. > Problem here is thet when I turn it ON, can heard tone > (cca 800-1000hz) from speaker and nothing else, no > picture on screen, no change mode or anything. > Any tips ? Just a wild guess - power supply issues, bad connections? No screen - no voltage to the scope section. No change of mode - no voltage to unit controlling said functions. Not having a manual myself, this is all I can say with any degree of certainty. Myself, I have a 2001C. Article: 94467 of rec.radio.amateur.homebrew From: "Heytubeguy" Subject: FA:Uniden BC-350A,MFJ-208+..... Message-ID: Date: Sun, 25 Sep 2005 20:59:06 GMT Fully working Uniden Bearcat BC-350A scanner and a MFJ-208 VHF antenna analyzer + 6v6's GT and Metal,+ +5Y3 JAN/GE +more Heathkits, more tubes, HEATH NEW AND USED MANUALS soon too; see at : http://search.ebay.com/_W0QQfgtpZ1QQfrppZ25QQsassZheytubeguy Tnx for looking, 73 , heytubeguy Article: 94468 of rec.radio.amateur.homebrew From: Darko <9a3li_makni_@hamradio.hr> Subject: Re: OT: Motorola R2001x Date: Sun, 25 Sep 2005 23:10:37 +0200 Message-ID: References: <78BZe.36316$Tf5.12991@newsread1.mlpsca01.us.to.verio.net> jm wrote: > > Just a wild guess - power supply issues, bad connections? No screen - no > voltage to the scope section. No change of mode - no voltage to unit > controlling said functions. Not having a manual myself, this is all I can > say with any degree of certainty. Myself, I have a 2001C. > > > Problem, PS is good (more or less) voltages are fine. When turn it off then I can see some blink/flash on screen, thats all. CPU unit ? Why continious tone from speaker ? Must be some error, but where ? :) Article: 94469 of rec.radio.amateur.homebrew From: "jm" References: <78BZe.36316$Tf5.12991@newsread1.mlpsca01.us.to.verio.net> Subject: Re: OT: Motorola R2001x Message-ID: Date: Sun, 25 Sep 2005 17:54:26 -0400 "Darko" <9a3li_makni_@hamradio.hr> wrote in message news:dh73ok$obm$1@ss405.t-com.hr... > jm wrote: > >> >> Just a wild guess - power supply issues, bad connections? No screen - no >> voltage to the scope section. No change of mode - no voltage to unit >> controlling said functions. Not having a manual myself, this is all I can >> say with any degree of certainty. Myself, I have a 2001C. >> >> >> > Problem, PS is good (more or less) voltages are fine. > When turn it off then I can see some blink/flash on screen, thats all. > CPU unit ? > Why continious tone from speaker ? > Must be some error, but where ? :) Well, without a manual of my own, I can't go any further........... Sorry! Unless I get one, some day I too will be in the same boat. jm Article: 94470 of rec.radio.amateur.homebrew From: matt vk3zmw Subject: sig gen plans Message-ID: Date: Mon, 26 Sep 2005 11:54:12 GMT Does anyone have a set of plans for a modulated RF generator suitable for testing receivers in the HF/VHF bands? TIA Article: 94471 of rec.radio.amateur.homebrew From: Ken Scharf Subject: Re: Big old-fashioned IF transformers for tube-type homebrewing? References: <1126653515.795787.34880@g43g2000cwa.googlegroups.com> Message-ID: Date: Mon, 26 Sep 2005 21:43:23 -0400 Tim Shoppa wrote: > Are the big old-fashioned IF transformers-in-a-can available > anywhere anymore? I want to make a receiver, probably double > conversion, > which would mean that I'd want several each of the 50kHz and some > higher frequency (455kHz likely). > > Are these things that can be made from scratch without a lot of > difficutly? I can wind coils etc. but don't > have any transformer slug-tuned cores. > > Tim KA0BTD > You can still find junk AA5 radios in the trash from time to time and rip out their 455khz if cans. 85khz transformers from arc-5 radios are STILL out there at hamfests, and the bc453 radios they came from show up often on ebay. I think I have a few of these cans in my junk box. You can pad them down to 50khz if you want, but there is nothing wrong with the 85khz if frequency. The arc5 cans have a feature where the spacing between the primary and seconday windings is variable. Remove the top cap and pull up on the fiber rod to increase the spacing, push down on it to move the windings together. With the windings spaced out you get a nice sharp peaked bandwidth, with the windings together they are over- coupled and you get a bandwidth well suited for ssb phone, A Q multiplier and/or t-notch filter both work well at this frequency. Some of the ARC-5 85khz cans had tapped windings to get better Q by connecting the grid and plate of the tubes 'below' the high impedance end of the coils by a few percent. If you exchange the hot and cold ends of the coils, the taps might work out well for bipolar transistor impedance matching connections! Article: 94472 of rec.radio.amateur.homebrew From: Ken Scharf Subject: Re: DDS and phase noise. References: Message-ID: Date: Mon, 26 Sep 2005 21:48:03 -0400 Mauro wrote: > I'm not an expert and need some help. > I've build a DDS around an AD9951. > I drive it at 400MHz from a source at 200MHz multiplied by 2. I get an > output freq of 20MHz. > I now drive it directly from the same source at 200MHz. I changed the > register inside DDS to still get 20MHz on output. > I do not have any possibility to measure the phase noise. > So the question: is it possible to estimate if the phase noise of the 20MHz > output is getting better, worst or is it going to remain the same? > Thanks for the support. > 73 > Mauro > > Using the built in frequency multiplier of the 9951 will increase your phase noise, but so will driving the chip at a lower frequency. I've been told that the built in multiplier also RAPIDLY increases the power the chip pulls and the heat it generates, so given a choice between doubling the frequency with the multiplier and living with 1/2 the frequency drive, (especially if you already have a 200mhz source) I'd not use the multiplier. Article: 94473 of rec.radio.amateur.homebrew From: "Alain" Subject: Vectron pinout ? Date: Tue, 27 Sep 2005 11:31:28 +0200 Message-ID: <4339115d$0$19276$626a14ce@news.free.fr> Hello, I have a surplus Vectron model 229-7730-5 Frequency :108Mhz VCXO I wonder if anyone in this group happens to know where I might find a specification sheet with pinout information for it ? Many thanks in advance for any help! 73 & Enjoy! Alain (F1MDT) Article: 94474 of rec.radio.amateur.homebrew From: dunnt@its.caltech.edu (Tom) Subject: Re: Vectron pinout ? Date: Tue, 27 Sep 2005 11:56:42 -0700 Message-ID: References: <4339115d$0$19276$626a14ce@news.free.fr> Pin 1 No connection (NC) Pin2 Case(0V) Pin3 Case(0V) Pin4 B+ 24VDC Pin5 VCXO Supply For option V models only Pin6 VCXO Input For option V models only Pin7 VCXO Return/case For option V models only Aging CO-229 = 1 X 10-8/day Output .5Vrms into 50 ohms Stability +/_ 5 X 10-8 Hope this helps If you need more information I try to find it let me know. Tom WB6IQD In article <4339115d$0$19276$626a14ce@news.free.fr>, "Alain" wrote: > Hello, > I have a surplus Vectron model 229-7730-5 Frequency :108Mhz VCXO > > I wonder if anyone in this group happens to know where I might > find a specification sheet with pinout information for it ? > > Many thanks in advance for any help! > > 73 & Enjoy! > Alain (F1MDT) Article: 94475 of rec.radio.amateur.homebrew From: "Alain" References: <4339115d$0$19276$626a14ce@news.free.fr> Subject: Re: Vectron pinout ? Date: Wed, 28 Sep 2005 00:54:09 +0200 Message-ID: <4339cd81$0$4328$626a14ce@news.free.fr> Many Thank Tom, for your informations. Can you how make to change the frequency of the VCXO by using the pin5/6/7 ? Alain "Tom" a écrit dans le message de news: dunnt-2709051156420001@dhcp-40-120.caltech.edu... > > Pin 1 No connection (NC) > Pin2 Case(0V) > Pin3 Case(0V) > Pin4 B+ 24VDC > Pin5 VCXO Supply For option V models only > Pin6 VCXO Input For option V models only > Pin7 VCXO Return/case For option V models only > > Aging CO-229 = 1 X 10-8/day > Output .5Vrms into 50 ohms > Stability +/_ 5 X 10-8 > > > Hope this helps If you need more information I try to find it let me know. > > Tom WB6IQD > > > In article <4339115d$0$19276$626a14ce@news.free.fr>, "Alain" > wrote: > >> Hello, >> I have a surplus Vectron model 229-7730-5 Frequency :108Mhz VCXO >> >> I wonder if anyone in this group happens to know where I might >> find a specification sheet with pinout information for it ? >> >> Many thanks in advance for any help! >> >> 73 & Enjoy! >> Alain (F1MDT) Article: 94476 of rec.radio.amateur.homebrew Date: Thu, 29 Sep 2005 19:55:21 +0800 From: Richard Hosking Subject: Re: Manual for HP 1707B Oscilloscope References: <1127859573.242742.69750@g49g2000cwa.googlegroups.com> Message-ID: <433bd62a$0$6539$5a62ac22@per-qv1-newsreader-01.iinet.net.au> Do a google for it - quite a few hits E bay usually has a few manuals also R Zen Navigator wrote: > Hi, > > As anyone a paper or electronic manual for the HP 1707B Hewlett Packard > Oscilloscope. I believe there is an A version, which I think would be > o.k. > > Maybe know of a website where it can be downloaded, preferably for free > > > Will pay for any postage or materials if required. > > dahall.aefb0@orange.net > > Dave > > M0GSM > Article: 94477 of rec.radio.amateur.homebrew From: nospam@nouce.bellatlantic.net Subject: Re: solid state 6m amplifier/IRF 510! Message-ID: <8pmnj1ln5c8ofksm1l44kvjhg0946hf4h3@4ax.com> References: <1126880193.099234.286630@f14g2000cwb.googlegroups.com> <5xGYe.2460$vw6.906@newsread1.news.atl.earthlink.net> <1127959474.884834.102440@g43g2000cwa.googlegroups.com> Date: Thu, 29 Sep 2005 12:46:53 GMT On 28 Sep 2005 19:04:34 -0700, "WSQT" wrote: > We pirates have made the common, ordinary IRF 510 MOSFET work much >higher than the 6M ham band-like at 88MHZ! For several months WSQT >Guerilla Radio(The Squat in DC) was on 87.9 at 10W with a single IRF >510 as the final. Details are in an old post to alt.radio.pirate. We >later went up to a dual 6146 tube final for more range, and are now >>>>>>>>snipped>>>>>>>>>>>>>>>>>> Several questions. Operating mode? Class A, B, C, D, E? Stage gain? Answer makes a difference. SSB required at worst class B and class C would cause way to much distortion. While FM is typically class C as there are no amplitude variations. This makes a great difference is operating characteristics and power out. Since SSB and most amateur uses are narrow band by nature any spurious outputs are undesired. Amps using the IRF510 at HF have been built but their purity (IMD and harmonics) is only adaquate to barely so and tends to degrade as frequency is increased. FYI: to feed an IRF510 as broad band you need to match the 50ohm input to less than 2 ohms reactive at VHF. This is hard to do for greater than octave frequency ranges as it is all reactive. With that I've run an IRF510 at 6m (50mhz) linear (class ab1) with a stage gain of around 9db and with 24V around 4W. It was difficult to match, unstable tending to oscillate, and prone to thermal runaway (case has high termal resistance). A scrap final from a CB (2SC1307) gave me 7W, clean at 12V and far less stability and matching issues plus cleaner IMD. For the same effort a MRF492 at 50mhz easily delivers 90w at 12V and 11db gain as linear. That same 2sc1307 class C will deliver 12w and would drive a MRF492 to 100w class C. To put it bluntly, for the effort to get 10W out of a IRF510 I can do far better with a 22$ transistor and still be ahead. Allison KB1GMX Article: 94478 of rec.radio.amateur.homebrew From: "Asimov" Subject: Re: switching power mosfet as RF amplifiers Message-ID: References: Date: Thu, 29 Sep 2005 13:35:14 GMT "nospam@nouce.bellatlantic.net" bravely wrote to "All" (14 Sep 05 12:18:39) --- on the heady topic of "Re: switching power mosfet as RF amplifiers" no> From: nospam@nouce.bellatlantic.net no> Xref: core-easynews rec.radio.amateur.homebrew:87858 no> On 14 Sep 2005 01:24:16 -0700, francesco.messineo@gmail.com wrote: > >nospam@nouce.bellatlantic.net ha scritto: > >> >> Good luck. Most of those devices will exhibit gain to amazing >> frequencies due the fact that fets have no real limits like junction >> transistors. What they do have that limits them is real world things >> like lead inductance, Input capacitance, output capacitance and Drain >> to Gate Miller capacitance all of which make it difficult to get power >> in and out of them as frequency increases. >> >> The input capacitance for the IRF510 is 135pf, the higher power parts >> can easily be upwards of 1275pf for the IFR640 (Xc of around 2ohms). >> Output capacitance around 400pf and feedback capacitance of 100PF >> also for the 640. > >Reading from the ARF488 datasheet (this mosfet is made for RF >amplification >up to 60 MHz or so) I see input capacitance of 1400 pf typical, and >150 pf output capacitance typical. >The IRF840 datasheet reports 1300 pf and 200 pf in/out capacitance >at the same frequency of the ARF488 (1 MHz). So what else affect >high frequency performance of these devices? Is the 50 pf difference >in output capacitance the "big" problem? Reverse transfer capacitance >of the ARF488 is 65 pf against the 18 pf of the IRF840. no> Yes that is true. However that input capacitance is close to what I'd no> use to bypass a 50mhz circuit. It's near RF dead short unless you no> try to absorb it into the feed network. Even then it's a very low Z. Can one drive them with a grounded gate using a bipolar transistor at the source? A*s*i*m*o*v ... <- Grains Of Salt. Take As Needed With Above Message. Article: 94479 of rec.radio.amateur.homebrew From: "Asimov" Subject: Preamp Message-ID: Date: Thu, 29 Sep 2005 13:35:17 GMT Hi, Was wondering if a wideband preamp might have a better noise figure if its input impedance is greater than the antenna's. It also has a couple of head to tail 1N4148 diodes across the input for protection. Would removing the diodes extend the bandwidth or is the extra 8 pF stray diode capacitance become lumped in with the coax capacitance? Surely the preamp input has some capacitance too, so how does this affect the voltage delivered? Please, answer at your convenience. A*s*i*m*o*v ... Ok, I pulled the pin. Now what?.....Hey! Where are you all going? Article: 94480 of rec.radio.amateur.homebrew From: nospam@nouce.bellatlantic.net Subject: Re: switching power mosfet as RF amplifiers Message-ID: References: Date: Thu, 29 Sep 2005 14:11:32 GMT On Thu, 29 Sep 2005 13:35:14 GMT, "Asimov" wrote: > no> Yes that is true. However that input capacitance is close to what I'd > no> use to bypass a 50mhz circuit. It's near RF dead short unless you > no> try to absorb it into the feed network. Even then it's a very low Z. > > >Can one drive them with a grounded gate using a bipolar transistor at >the source? Yes, but not with any significant power output and the gain would be poor at high power. This is known as cascode configuration and is used at low power (milliwatts) with good results. Allison Article: 94481 of rec.radio.amateur.homebrew From: nospam@nouce.bellatlantic.net Subject: Re: Preamp Message-ID: References: Date: Thu, 29 Sep 2005 14:34:11 GMT On Thu, 29 Sep 2005 13:35:17 GMT, "Asimov" wrote: >Hi, > >Was wondering if a wideband preamp might have a better noise figure if >its input impedance is greater than the antenna's. It also has a >couple of head to tail 1N4148 diodes across the input for protection. >Would removing the diodes extend the bandwidth or is the extra 8 pF >stray diode capacitance become lumped in with the coax capacitance? >Surely the preamp input has some capacitance too, so how does this >affect the voltage delivered? Please, answer at your convenience. > The diode capaitance is low and really not a factor in preamp gain or noise. They are non conducting and the capacitance is easily absorbed into fees and matching systems. The exact match for any preamp to antenna is a complex as it depends on device, circuit topology and frequency. Generally with most fets the ideal transducer impedence for best gain and low noise is higher than 50 ohms. For most bipolar transistors it's less than 50 ohms. Getting a reasonable match and incurring low losses in that matching network are challenges. Every DB of loss at the input contributes negatively to system noise figure. This includes feedline [coax] between the amplifier and the antenna. With all that... Wide band amps generally are of the feedback type and unless they are of the Norton topology they are noisy. Added to that is wideband noise has more total power than a narrow band segment of noise fro the same source. So it goes to say that narrow band amplifiers generally have the lowest noise. For HF this is rarely a real problem as most amps have low enough noise to be useful as the environment is very noisy. As we transistion to low VHF and higher this case changes greatly. It's also at VHF and higher that low noise amplification starts to become significant and more difficult to achieve. Modern high performance devices however may make this appear simple. For example a wide band mimic MAR-6 achieves 20db gain 3db noise figure to upper UHF. However 3db is only ok, as a good Gasfet at 430mhz will be less than .8db noise figure and even fair number of cheap bipolars can achive sub 1db with ease. So it's really an issue of what noise figure you really need and what bandwidth you need it to cover. For ham purposes this is an issue for practical consideration for 10m and above weak signal work or space comms such as EME. For serious weak signal work in the VHF/UHF realm you have to look at the antenna system and feed system as part of that noise figure. Allison KB1GMX Article: 94482 of rec.radio.amateur.homebrew From: mcalhoun@ksu.edu Subject: FM SCA adapter? Date: 29 Sep 2005 18:56:36 -0500 Message-ID: I've always wanted to build an SCA adapter for an FM radio so I could see what else is available in the 88-108 MHz band. A web- search found lots of schematics, but I'd appreciate suggestions as to which schematic YOU have built that works. -- --Myron A. Calhoun. Five boxes preserve our freedoms: soap, ballot, witness, jury, and cartridge PhD EE (retired). "Barbershop" tenor. CDL(PTXS). W0PBV. (785) 539-4448 NRA Life Member and Certified Instructor (Home Firearm Safety, Rifle, Pistol) Article: 94483 of rec.radio.amateur.homebrew From: nospam@nouce.bellatlantic.net Subject: Re: solid state 6m amplifier/IRF 510! Message-ID: References: <1126880193.099234.286630@f14g2000cwb.googlegroups.com> <5xGYe.2460$vw6.906@newsread1.news.atl.earthlink.net> <1127959474.884834.102440@g43g2000cwa.googlegroups.com> <8pmnj1ln5c8ofksm1l44kvjhg0946hf4h3@4ax.com> <1128046033.694176.232710@g14g2000cwa.googlegroups.com> Date: Fri, 30 Sep 2005 02:41:47 GMT Cut to the chase. The only thing the IRF5xx series has going for it is it's dirt cheap. The problem is that coaxing them to deliver is more pain than better devices. Good devices in reasonable circuits have one advantage, repeatability of performance. As to MW am service, I'd use the heavier devices and run them class E in the several hundred watts to KW range. Even the IRF510 in class E is good for more than 50W for a pair and should run reasonably cool. Even the really big E amps only need a few watts as excitation. This works because they are being used as switches, what they were designed to do. A class E amp can be "plate modulated" in the usual way but a PWM modulator will be far more efficient. There are a number of people running class E Am phone on 160, 75 and 40m and they sound very good. For decent RF designs that withstand impossible swrs a good RF rated device is hard to beat. The real problem is finding a source that doesn't mark them up 500%. However there are some devices out there that are like the venerable 6146 they do the job and can be had at less than 0.40$/watt. For 6m the MRF492 for example rated power out at 12V of 70W and most deliver 80-90. For the price it's cheap. For 2m I'd just grab a MRF247, easy 75watts at 2m class C or B and a pair with Wilkerson splitter/combiners deliver a heafty 145watts on the Bird. They work well for 2m SSB service with decent IMD. the last pair(matched) I bought as for a commercial amp repair only cost 70$. For that kind of power that's cheap. Allison KB1GMX Article: 94484 of rec.radio.amateur.homebrew From: Chris Jones Subject: Re: Buffer Amp IC suggestions plse Date: Fri, 30 Sep 2005 23:36:19 +0100 Message-ID: <11jrbrqcgdttmfa@corp.supernews.com> References: Winfield Hill wrote: > Jeff wrote... >> >> Needs to drive into 50 ohms. input level approx 150mV at 5Mhz >> >> Winfield Hill wrote ... >>> Jeff wrote... >>>> >>>> Ive been trying to locate a suitable unity gain buffer amplifier >>>> IC that can drive a 50 load. >>>> Application is to buffer a VCO output at 5Mhz. >>>> Needs to be 8pin DIP >>> >>> LTC's LT1206 comes in TO220, miniDIP and soic packages, >>> and Digi-Key has them in stock for $6.25 each... >>> http://rocky.digikey.com/WebLib/Linear%20Tech/Web%20Data/LT1206.pdf >>> http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=329191 >>> >>>> and operate on a single-ended supply. >>> >>> Oops, +/-5V supply. What's your signal voltage? And did >>> you want your output to have a 50-ohm source impedance? > > Unless you source with 50 ohms (2x signal plus 50-ohm resistor), > and terminate with 50-ohms, the issue becomes how much cable > capacitance? Either the load looks resistive (100 ohms in the > former case) or capacitive. > > I would say it depends on the cable you choose. If there is a 50 Ohm load and you connect it to your buffer amplifier with 50 Ohm coaxial cable, then the buffer amplifier will see a 50 Ohm resistive load, not capacitive at all. It is probably still wise to use the gain-of-two amplifier and 50 Ohm source resistor in case the load happens to be a poor match. If you really don't need this feature then I would be tempted to use an emitter follower with just one transistor. (Do they make transistors in DIP-8 packages?) Chris Article: 94485 of rec.radio.amateur.homebrew From: "Tom Holden" Subject: DSP, DRM and other Mods for the DX-394 Message-ID: Date: Fri, 30 Sep 2005 22:07:08 -0400 Robin, G4DVJ, and Chris, G8LVK, have put up on their Monitor Internet website their hardware mod for the Realistic/Radio Shack DX-394 for downconversion to a 12kHz 3rd IF for DRM and other sound card DSP demodulators such as SDRadio. A beautiful piece of work it is, too, both in execution and publication, incorporating the Sat-Schneider module. That prompted me to look over the other mods and I see some added illustrations, if not additional mods, since I last looked. The bhi DSP module installation is especially sweet, albeit pricey. So if you have not visited their site in a while, do so, and be inspired! Its at http://www.monitor.co.uk/radio-mods/dx-394/dx-394.htm#mods Great job, guys! 73, Tom Article: 94486 of rec.radio.amateur.homebrew Message-ID: <433E34E6.5080400@freenetname.co.uk> From: Pete Townrow Subject: DX Date: Sat, 01 Oct 2005 07:00:01 GMT I have worked the world on 27 ssb that is what I did not want to say on air. Pete Article: 94487 of rec.radio.amateur.homebrew From: "Richard W. Solomon, W1KSZ" Subject: WTD: Powerpole 180A Connectors Message-ID: Date: Sat, 01 Oct 2005 17:34:57 GMT The Glenayre Power Supply I got with it's companion Amp uses 180A Powerpole Connectors for the 28 vdc output. Anyone got a spare couple of these beasties ?? Even better would be the interconnecting power cable, there are two ~1/4" pins for the +DC and two ~1/4" jacks for the -DC. I found a GR double plug fits the -DC, but the +DC has me stumped. I hate to tack solder a lead on them (too tacky !!). 73, Dick, W1KSZ