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221. Re: [Amps] 4CX250 IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Mon, 1 Oct 2007 12:35:46 -0400; Thanks, that is a great site. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2007-10/msg00013.html (9,967 bytes)
222. Re: [Amps] 8877 Grid Trip timing (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 2 Oct 2007 17:37:45 -0400; Also back in the 60's I was an engineering tech for High Voltage Engineering. The power supplies were 100-400KV at up to 300ma. All testing was done behind a radiation and blast proof brick and steel; /archives//html/Amps/2007-10/msg00025.html (11,851 bytes)
223. Re: [Amps] Anyone build a GU5B? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 4 Oct 2007 20:58:14 -0400; If glass is acceptable how about a 3-1000Z? Demand is down and full output ones show up fairly often. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com h; /archives//html/Amps/2007-10/msg00048.html (9,115 bytes)
224. [Amps] 813 sockets needed (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 4 Oct 2007 22:09:12 -0400; I need one or two sockets for these antiques, prefer old USA made. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/; /archives//html/Amps/2007-10/msg00054.html (6,474 bytes)
225. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 9 Oct 2007 09:10:59 -0400; Im sure others will chime in but some of those CB amps are very useful on ham bands. BUT, they usually all need the following: Rebiasing for true linear service. Since the circuits are mostly copied; /archives//html/Amps/2007-10/msg00084.html (10,982 bytes)
226. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 9 Oct 2007 13:25:23 -0400; Running low voltage bipolar transistors on a big antenna or at high power is really not a good idea and the cure isn't as simple as setting the zero signal idle current or adding a harmonic filter. T; /archives//html/Amps/2007-10/msg00089.html (8,459 bytes)
227. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 10 Oct 2007 12:41:08 -0400; Thats a loaded question since even some poorly designed ham amps and transmitters dont meet FCC regulations. The only proper way to tell the harmonic content is to use a spectrum analyzer. In additio; /archives//html/Amps/2007-10/msg00098.html (14,603 bytes)
228. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 10 Oct 2007 13:46:00 -0400; More than one legitimate ham brick manufacturer produced a CB amp under a different "corporate" name. I assume they used similar engineering "expertise" with the bias circuits. BTW, a 1N5408 on top o; /archives//html/Amps/2007-10/msg00103.html (11,816 bytes)
229. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 10 Oct 2007 14:28:53 -0400; I find it strange that you condemn a circuit without even knowing its details. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.; /archives//html/Amps/2007-10/msg00106.html (8,876 bytes)
230. Re: [Amps] CB etc Amps (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 10 Oct 2007 19:59:41 -0400; What is the AC line power between the THP and a Henry of the same output? And what does the difference translate into $$ saved over the next decade or so of average use? Carl KM1H ___________________; /archives//html/Amps/2007-10/msg00117.html (9,241 bytes)
231. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 10 Oct 2007 20:34:25 -0400; The proper context is: Not nearly as strange as I find when someone condems a circuit without knowing how it works. Carl KM1H _______________________________________________ Amps mailing list Amps@co; /archives//html/Amps/2007-10/msg00118.html (8,497 bytes)
232. Re: [Amps] Hmmm...interesting data sheet (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 11 Oct 2007 12:14:25 -0400; Waters tubes were made by United Electronics as were early round bulb Cetrons. I have a pair of Waters here that I use for testing, they still do 800W on 6M and the date codes are both 6424. Those Ep; /archives//html/Amps/2007-10/msg00133.html (7,577 bytes)
233. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 11 Oct 2007 13:37:51 -0400; Ian, the circuit Ive mentioned is very similar to your 2 transistor version. I'll send it along with the other stuff once I get this scanner working properly. Carl KM1H ______________________________; /archives//html/Amps/2007-10/msg00136.html (11,692 bytes)
234. Re: [Amps] CB Amps or full spectrum??? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 11 Oct 2007 13:43:51 -0400; Thats par for the course. The circuit I mentioned is in use by commercial manufacturers whose engineers didnt feel the need to consult with Helpful Harry. Pity. I'll be sending it to Ian once I get t; /archives//html/Amps/2007-10/msg00137.html (10,186 bytes)
235. Re: [Amps] Let down (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 11 Oct 2007 19:46:17 -0400; Is CQ still published? Shame on you Peter for even reading it. If you need some bathroom tissue I'm sure that one of your dailies would suffice (; Once a great magazine, in the late 40's and 50's it; /archives//html/Amps/2007-10/msg00144.html (9,230 bytes)
236. Re: [Amps] SB-230 Amp Retrofit (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Fri, 12 Oct 2007 18:40:19 -0400; Thats awful lot of work. And then hope the source of tubes doesnt dry up. Ive done a swap by sawing off the side of an 8874 (dont laugh, they "were" cheap) and TIG welding a heavy brass plate. I forg; /archives//html/Amps/2007-10/msg00166.html (9,707 bytes)
237. Re: [Amps] Do doorknobs go bad (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Mon, 15 Oct 2007 12:42:08 -0400; What does "I then isolated the HV with a rubber eraser" supposed to mean?? If you are trying to say that you defeated the HV shorting bar with an eraser then by taking it out you now have a shorted H; /archives//html/Amps/2007-10/msg00188.html (9,956 bytes)
238. Re: [Amps] B /W PT2500A (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Mon, 15 Oct 2007 12:51:47 -0400; There is a PT2500 and a PT2500A. The early production A's had a problem with blowing the bandswitch and are the same circuit as the non A which is the Canadian Hammond Viewstar. As far as I know all; /archives//html/Amps/2007-10/msg00189.html (8,700 bytes)
239. Re: [Amps] T/R schemes in Homebrew Amps (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 18 Oct 2007 10:35:45 -0400; A big knife switch. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2007-10/msg00212.html (8,060 bytes)
240. [Amps] WTD 10V @ 20A filament xfmr (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sat, 20 Oct 2007 15:54:35 -0400; It can be any package or footprint; 120V input preferred Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a; /archives//html/Amps/2007-10/msg00231.html (6,165 bytes)

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