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References: [ +from:peter.chadwick@Zarlink.Com: 335 ]

Total 335 documents matching your query.

321. Re: [Amps] Mod xmfr (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Mon, 11 Oct 2004 17:20:54 +0200
that, BTW!!), you might check out this site: >http://www.classeradio.com/ Real radios glow in the dark! Will this solid state rubbish ever really catch on? 73 Peter SM/G3RZP _________________________
/archives//html/Amps/2004-10/msg00153.html (7,078 bytes)

322. Re: [Amps] Looking for a design for a single 4cx250btube on 50 Mhz-six meters. (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Wed, 13 Oct 2004 09:38:16 +0200
input. That's certainly more believable. However, I've seen an amp for the UK 70MHz band using one that would produce 450watts 'single tone' - i.e, a whistle into the microphone! The linearity was no
/archives//html/Amps/2004-10/msg00196.html (8,820 bytes)

323. Re: [Amps] Bandswitch source or roller inductor (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Thu, 14 Oct 2004 09:22:09 +0200
The 6 way switches from the BC375 TU units are available from Fair Radio in Lima, OH. They are 1p 6way, and are a whopping$3.95 each, 10 for $32! There was an article in CQ some years ago on ganging
/archives//html/Amps/2004-10/msg00203.html (7,859 bytes)

324. Re: Re: [Amps] Advice on instruments for ham use (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Fri, 26 Nov 2004 09:27:09 +0000
Of course, Tektronix was started by people who left HP when HP didn't want to do advanced scopes. 73 Peter G3RZP _______________________________________________ Amps mailing list Amps@contesting.com
/archives//html/Amps/2004-11/msg00434.html (8,094 bytes)

325. Re: [Amps] Question: Ameritron AL-80A tuning (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Wed, 1 Dec 2004 18:02:56 +0100
What's the input SWR? I'd suspect the input tuned circuits may be so far out that you're exciter is shutting down and the amp isn't getting much drive. 73 Peter, temporarily SM/G3RZP "NW7US, Tomas" <
/archives//html/Amps/2004-12/msg00003.html (9,422 bytes)

326. Re: [Amps] RCA module -- curiosity killed the cat (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Thu, 9 Dec 2004 08:44:28 +0000
Could be a CATV module - RCA did a lot of those. 73 Peter G3RZP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2004-12/msg00144.html (7,472 bytes)

327. Re: [Amps] Help on Aerovox capacitor (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Fri, 17 Dec 2004 10:38:14 +0000
I would doubt very much if a 2kV capacitor is a polarised type. The highest voltage electrolytic I've ever seen was a 8 microfard 800 volt unit. The difficulty lies in getting an adequately thick, ev
/archives//html/Amps/2004-12/msg00223.html (7,651 bytes)

328. RE : [Amps] Tuning (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Wed, 22 Dec 2004 16:33:40 +0100
-3dB, not -6dB. 73 Peter SM/G3RZP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2004-12/msg00258.html (6,911 bytes)

329. [Amps] HV Supplies and Diodes (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Thu, 3 Jan 2008 23:10:42 +0000
According to the designers I used to work with, who designed diode and thyristor and IGBT stacks for everything up to 5000 volts DC at 2500 Amps, when putting diodes in series. make sure they;re from
/archives//html/Amps/2008-01/msg00047.html (9,097 bytes)

330. Re: [Amps] Transceiver Output Impedance (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Sun, 9 Mar 2008 10:46:44 +0000
This is an interesting question, and there are two schools of thought. One says that you get maximum power when you have a conjugate match, and the other says you get maximum power when feeding an op
/archives//html/Amps/2008-03/msg00090.html (9,775 bytes)

331. Re: [Amps] mounting (UHF) RF powermodules (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Mon, 24 Mar 2008 12:49:24 +0000
be flat enough without machining, ideally with a large diameter 'fly' cutter. You are also looking for a good surface finish with machining ridges barely detectable with a fingernail. As well as flat
/archives//html/Amps/2008-03/msg00235.html (8,468 bytes)

332. Re: [Amps] re 77 MHz to 88 MHz vhf band usage (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Wed, 26 Mar 2008 11:03:50 +0000
customs charges will probably stop Fern from making a big deal on this... sorry for that....< Plus the fact that if they aren't CE marked, it's illegal to sell them in the EEC, unless that model was
/archives//html/Amps/2008-03/msg00272.html (8,706 bytes)

333. Re: [Amps] Silver Strap (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Wed, 9 Jul 2008 08:36:10 +0100
The discolouration on silver plate has led in the past to teh use of a 'flash' of iridium over the top. That doesn't discolour. Other cures for VHF parasitics using strange materials are the same as
/archives//html/Amps/2008-07/msg00079.html (8,815 bytes)

334. Re: [Amps] 1/4" shaft connectors (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Sun, 28 Sep 2008 11:03:05 +0100
If we're talking straight forward couplers (not flexible) , what is a reasonable price for them in:- a) Brass b) Nylon And what threads on the set screws - 6-32, or metric? Some years ago, I made a l
/archives//html/Amps/2008-09/msg00235.html (10,076 bytes)

335. Re: [Amps] Linear Amps (score: 1)
Author: peter.chadwick@Zarlink.Com
Date: Tue, 2 Dec 2008 14:21:24 +0000
Eimac aslo published the whole thing as a 20 page application note. That's amateur service newsletter AS53 of 1979, entitled 'design considerations for linear amplifiers'so you might be able to find
/archives//html/Amps/2008-12/msg00034.html (8,367 bytes)


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