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1. [AMPS] Building new 4-1000A amp (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 04 Jan 2002 07:33:07 -0600; Who knows. I've read similar things and built my amp using about 6 KV on the anode (about 5.2 KV under load). I get an easy 1500 Watts out with less than 100 Watts of drive. I had problems with the o; /archives//html/Amps/2002-01/msg00046.html (11,308 bytes)
2. [AMPS] Building new 4-1000A amp (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 04 Jan 2002 07:43:58 -0600; One more comment on why people run high plate voltages could be that they don't have very stiff power supplies. Like I stated in the earlier post that my supply drops from about 6KV to 5.2 KV under l; /archives//html/Amps/2002-01/msg00047.html (9,507 bytes)
3. [AMPS] Building new 4-1000A amp (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 04 Jan 2002 23:32:55 -0600; 73, Jon NA9D -- Jon Ogden NA9D (ex: KE9NA) Life Member: ARRL, NRA Member: AMSAT, DXCC http://www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: http://www.contesting.com/FA; /archives//html/Amps/2002-01/msg00057.html (9,471 bytes)
4. [AMPS] Non-Inductive Carbon Resistors (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Tue, 06 Nov 2001 20:13:35 -0600; For really good, very low inductive resisitors (Measures is correct, there is no such thing as "non-inductive") try Caddock Engineering. They have some really terrific parts and in some creative pack; /archives//html/Amps/2001-11/msg00106.html (8,649 bytes)
5. [AMPS] 3-500Zs - Who's the best? (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Thu, 15 Nov 2001 21:48:19 -0600; Hi guys, I am inquiring for a friend of mine who needs to replace his 3-500Zs in his SB220. Who makes the best ones now days? Thanks, Jon -- Jon Ogden NA9D (ex: KE9NA) Member: ARRL, AMSAT, DXCC, NRA; /archives//html/Amps/2001-11/msg00275.html (6,988 bytes)
6. [AMPS] HV warning (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 12 Oct 2001 07:16:37 -0500; Very good advice, John. Religiously sticking to safety rules and following procedures will save your life. Do it even if you don't think you need to. It's like operating a firearm. You check the cham; /archives//html/Amps/2001-10/msg00292.html (8,647 bytes)
7. [AMPS] True Or Not True #2 (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Thu, 06 Sep 2001 17:50:21 -0500; Ah, this is true. Maybe Rich has shifted by 2 dB and he's trying to see if we notice! One funny comment, I work with a guy who has a couple of kids. When they get too noisy around the adults he alway; /archives//html/Amps/2001-09/msg00087.html (9,212 bytes)
8. [AMPS] True Or Not True #2 (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Thu, 06 Sep 2001 23:30:50 -0500; Yep. You can always tell in the pileups who the guys with the dipoles and 100 Watts are versus the guys with even beams and just 100 Watts. Big difference. 73, Jon NA9D -- Jon Ogden NA9D (ex: KE9NA); /archives//html/Amps/2001-09/msg00092.html (8,752 bytes)
9. [AMPS] IMD (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Tue, 18 Sep 2001 07:04:23 -0500; No, there's plenty of "RF" engineers out there. However, there are not plenty of "competent" RF engineers. And these days, Peter's correct, those of us who were engineers move on to other things wher; /archives//html/Amps/2001-09/msg00302.html (9,463 bytes)
10. [AMPS] IMD (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Tue, 18 Sep 2001 07:13:18 -0500; I'd agree with Peter. I can see a couple cases where it could get worse, but I'd like to see Tom elaborate more. A 1 dB drop in output power should result in a 2 dB drop in IMD (theoretically of cour; /archives//html/Amps/2001-09/msg00304.html (9,699 bytes)
11. [AMPS] IMD (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Wed, 19 Sep 2001 07:10:52 -0500; Well, this is done all the time. I designed several class A linear amplifier modules that used "FM service" devices. As long as you properly bias the device, it will be linear. Device construction is; /archives//html/Amps/2001-09/msg00341.html (9,662 bytes)
12. [AMPS] coax connector ratings (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 28 Sep 2001 07:15:25 -0500; Yikes! 750 Watts into an N at 1 GHz. That's pushing it. In the cellular industry the typical max power that is usually talked about for N connectors is 500 Watts at 900 MHz. Of course, the H&S figure; /archives//html/Amps/2001-09/msg00457.html (10,224 bytes)
13. [AMPS] FT100D driving Alpha 87a (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Thu, 02 Aug 2001 06:52:47 -0500; I think the RSGB's publication pointed this out. I was talking to G3RZP at Dayton and he told me he read it was a piece o crap transmitter. Pretty amazing they'd sell a radio for that much with that; /archives//html/Amps/2001-08/msg00012.html (9,070 bytes)
14. [AMPS] Kenwood ts2000 driving a G2DAF amp (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 03 Aug 2001 08:06:24 -0500; So maybe we should drive a G2DAF with the TS-2000? :-) 73, Jon NA9D -- Jon Ogden NA9D (ex: KE9NA) Member: ARRL, AMSAT, DXCC, NRA http://www.qsl.net/ke9na "A life lived in fear is a life half lived."; /archives//html/Amps/2001-08/msg00027.html (8,732 bytes)
15. [AMPS] TS-2000 (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 03 Aug 2001 16:48:31 -0500; Gee, why bother. Isn't CW dead as a mode? :-) At least that's what I hear from the unwashed masses. 73, Jon NA9D -- Jon Ogden NA9D (ex: KE9NA) Member: ARRL, AMSAT, DXCC, NRA http://www.qsl.net/ke9na; /archives//html/Amps/2001-08/msg00037.html (8,448 bytes)
16. [AMPS] Kenwood ts2000 driving a G2DAF amp (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Mon, 06 Aug 2001 07:23:20 -0500; Heh! Heh! A friend of mine who I used to work with, K9PPW, used to joke about the idea for a radio that was entirely software. Just had one big chip. That's it. Everything, including amplification wa; /archives//html/Amps/2001-08/msg00069.html (10,390 bytes)
17. [AMPS] 14KW my $0.02 (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 17 Aug 2001 07:14:14 -0500; I would say that power on these bands is needed just to help with getting above the noise. I wouldn't say that it has so much to do with trying to overcome other operators. Well, I respectfully disag; /archives//html/Amps/2001-08/msg00182.html (10,213 bytes)
18. [AMPS] 14KW (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 17 Aug 2001 07:17:39 -0500; Guffaw! Rich, I couldn't disagree with you more. Operating skill has a hell of a lot more to do with things other than how big your amplifier is. I think some hams build big amps to compensate for de; /archives//html/Amps/2001-08/msg00183.html (9,089 bytes)
19. [AMPS] 14KW (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 17 Aug 2001 07:22:25 -0500; Great point, Tom. I'll admit I've had fun working some routine, European DX with QRP. But in general I find that having a good clean signal into the pileup is best. I've been on the other side of the; /archives//html/Amps/2001-08/msg00184.html (9,213 bytes)
20. [AMPS] 14KW (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Mon, 20 Aug 2001 07:19:50 -0500; Well, let's see.... Probably. They probably think you are stupid because you are missing out on the fresh air of horses and the wonder of a clickety-clackety ride. No, the probably fly the bird as yo; /archives//html/Amps/2001-08/msg00237.html (14,866 bytes)

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