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1. [AMPS] 2000 ARRL Handbook question (score: 1): Author: Michael Tope <w4ef@pacbell.net> (Michael Tope); Date: Wed, 02 Aug 2000 06:39:45 -0700; Rich, Is Wes' raw impedance data for the conventional and nichrome suppressors published anywhere? Without any data to study, this debate ends being more like a political battle than scientific inqui; /archives//html/Amps/2000-08/msg00022.html (11,728 bytes)
2. [AMPS] Red RG-59/U (score: 1): Author: Michael Tope <w4ef@pacbell.net> (Michael Tope); Date: Thu, 27 Jul 2000 22:03:02 -0700; Anybody know where I can get solid poly RG-59/U with a red jacket for HV PS applications? Thanks, Mike, W4EF............................. -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions; /archives//html/Amps/2000-07/msg00185.html (6,413 bytes)
3. [AMPS] N-Connectors - Thanks for the Replies (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Wed, 01 Mar 2000 22:09:31 -0800; of the mil specs, the seemingly inconsistent results (everything from I ran 14 KW into one, to they were a source of constant failure at 1500 watts) that users appear to have obtained with series N; /archives//html/Amps/2000-03/msg00029.html (22,996 bytes)
4. [AMPS] N-Connectors - Thanks for the Replies (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Thu, 02 Mar 2000 08:15:32 -0800; Hi Rich, I usually weatherproof mine with scotch 33 and high vacuum grease. No trouble as of yet. Mike, W4EF................ The reason to use Type-N or Type-C fittings at HF is to keep water out of; /archives//html/Amps/2000-03/msg00051.html (9,253 bytes)
5. [AMPS] N-Connectors - Thanks for the Replies (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Thu, 02 Mar 2000 11:35:00 -0800; Yes, I this can be very annoying. The very property that makes HVG so good makes it a pain in the butt when you get it on the wrong thing. Usually I can wrap the tape beyond the smeared spot, and get; /archives//html/Amps/2000-03/msg00057.html (10,560 bytes)
6. [AMPS] Network analysis of suppressors (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Thu, 02 Mar 2000 08:09:56 -0800; Steve, I have seen this kind of behavior on marginally stable MMIC amplifiers. The harmonic goes thru the roof as it approaches the frequency range where the amp is very unstable, but the amp will no; /archives//html/Amps/2000-03/msg00060.html (9,786 bytes)
7. [AMPS] Network analysis of suppressors (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Sun, 05 Mar 2000 13:58:47 -0800; Tom and Rich, please see my comments below: Hi Rich, Rich or Tom, please forgive me if I misrepresent any of your claims as I haven't been following this debate very closely and hence am not fully ve; /archives//html/Amps/2000-03/msg00182.html (13,224 bytes)
8. [AMPS] Re: Poor Science (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Sun, 05 Mar 2000 14:25:11 -0800; Tom, See my comments below. Mike, W4EF........... Hi Terry, Most people have names. If you are addressing me, use my name and I will answer. I wouldn't call you Mr. Sucker, and in return I don't expe; /archives//html/Amps/2000-03/msg00189.html (12,041 bytes)
9. [AMPS] RE: Poor Science (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Mon, 06 Mar 2000 08:26:44 -0800; Terry, I am dying to know the answer to the obvious question, after the second "big-bang" how did you proceed. Did you reconfigure the parasitic suppressors, and if so, did this fix the problem? Did; /archives//html/Amps/2000-03/msg00248.html (10,640 bytes)
10. [AMPS] Network analysis of suppressors (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Mon, 06 Mar 2000 20:52:49 -0800; Rich, see my questions below: As it first did to me, Mike. My guess is that a photon strikes an atom, knocking loose a current carrier/electron, thereby causingthe tube to briefly conduct. This cause; /archives//html/Amps/2000-03/msg00329.html (10,659 bytes)
11. [AMPS] Re: Power Handling of Resistors (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Thu, 09 Mar 2000 22:04:03 -0800; Jon, In your example below I think you are confusing transmission of energy with conversion of energy. In the case of a properly operating amplifier which is generating 1500 watts of output power, th; /archives//html/Amps/2000-03/msg00523.html (11,754 bytes)
12. [AMPS] Re: Static discharge caused NOISE (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Sat, 11 Mar 2000 14:19:08 -0800; As Tom points out, DC grounding doesn't make much difference except in the case of electrostatic discharge. This can manifest itself in the form of rain or snow static. I recently saw an anecdotal ac; /archives//html/Amps/2000-03/msg00579.html (10,959 bytes)
13. [AMPS] Receiver performance (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Mon, 13 Mar 2000 08:46:35 -0800; Has anyone had a chance to play with the ICOM 756-PRO?? They are claiming a 24 bit A/D ahead of the DSP, but I don't know what its effective number of bits is. If its truly 24 bits, then it would hav; /archives//html/Amps/2000-03/msg00632.html (10,690 bytes)
14. [AMPS] Receiver performance (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Thu, 16 Mar 2000 04:21:54 -0800; I don't think there is anything fundamentally wrong with DSP technology. A DSP signal processing block will have an intercept point and a noise floor associated with it. As long as the designer place; /archives//html/Amps/2000-03/msg00737.html (10,395 bytes)
15. [AMPS] Receiver performance (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Thu, 16 Mar 2000 08:45:50 -0800; I don't think we disagree, Tom. Are you saying that the DSP in the FT1000MP and or TS950SDX is at 38KHz? I thought they were at audio, but admittedly, I never looked at the block diagrams. I just ass; /archives//html/Amps/2000-03/msg00750.html (11,229 bytes)
16. [AMPS] N Connectors (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Fri, 25 Feb 2000 07:27:46 -0800; Does anyone know the RF voltage/current rating (at sea level) of a typical type N connector. I have heard various opinions on this connector ranging from "It should never be used in high power applic; /archives//html/Amps/2000-02/msg00575.html (8,592 bytes)
17. [AMPS] abnormallly high plate current (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Thu, 06 Jan 2000 08:19:04 -0800; Lane, Are any of amp components (aside from the tube) running unusually hot? If not, conservation of energy says that the missing output power is being dissipated in the tube? Mike, W4EF This all sta; /archives//html/Amps/2000-01/msg00155.html (11,482 bytes)
18. [AMPS] RJ1A/RJ1H for Alpha 78 (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Sun, 10 Oct 1999 17:39:46 -0700; Does anyone have suggestions (aside from not running QSK) on how one can extend the life of the RJ1A vacuum relay in the Alpha 78 amplifier? Our club station has two of these amplifiers both of which; /archives//html/Amps/1999-10/msg00347.html (8,001 bytes)
19. [AMPS] Hold on - SWR meter placement (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Mon, 11 Oct 1999 07:03:17 -0700; Some folks are confusing a mismatch between the load and the line with a mismatch between SWR meter and the line. If the meter's characteristic Zo is different from the line Zo and the line is mismat; /archives//html/Amps/1999-10/msg00362.html (11,896 bytes)
20. [AMPS] THE SWR FINAL EXAM! (score: 1): Author: W4EF@pacbell.net (Michael Tope); Date: Tue, 12 Oct 1999 06:50:14 -0700; Jon, A few minutes with MatchCad. See answers below. Mike, W4EF................. OK, Now, for the FINAL exam on SWR: Joe Ham has a brand new amplifier that he plans to use exclusively on 14.225 MHz.; /archives//html/Amps/1999-10/msg00399.html (10,000 bytes)

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