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Total 13 documents matching your query.

1. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: John Lyles <jtml@losalamos.com>; Date: Sat, 10 Sep 2022 12:49:18 -0600; I saw you mention K5PRO, Don, so I had to come out of my shell. I have watched the 10 kW homebrew videos too. Admirable work, makes me long for time to do modern tube-based amplifier construction at; /archives//html/Amps/2022-09/msg00009.html (11,720 bytes)
2. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Donald Fox via Amps <amps@contesting.com>; Date: Sat, 10 Sep 2022 23:01:56 +0000 (UTC); John: Thanks for stepping in for a moment. I've been "reading the mail" here for years. Just like the sweet song of a high horsepower engine, it's something to participate, or at least watch when suc; /archives//html/Amps/2022-09/msg00011.html (14,032 bytes)
3. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sat, 10 Sep 2022 16:53:16 -0700; On 9/10/2022 4:01 PM, Donald Fox via Amps wrote: We all know that the internet is a mixed blessing. Lots of good stuff, but also very bad if one seeks it out. I find it quite amazing, to watch a VOA; /archives//html/Amps/2022-09/msg00012.html (8,199 bytes)
4. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Donald Fox via Amps <amps@contesting.com>; Date: Sun, 11 Sep 2022 01:21:57 +0000 (UTC); Jim: That must have been quite the tour, for sure! I had it on my bucket list to visit the facility when it was still up and running. Bethany VOA offered tours for years, but on the same weekend as t; /archives//html/Amps/2022-09/msg00013.html (10,050 bytes)
5. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sat, 10 Sep 2022 20:36:03 -0500; Don Fox raises a question Ive wondered about for years: how are these very high power amplifiers initially placed in service? Today, we have VNAs we can put in the palm of our hand, how is it done no; /archives//html/Amps/2022-09/msg00014.html (9,020 bytes)
6. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Sun, 11 Sep 2022 05:40:05 -0500; You make a DL for the frequency that presents the designed load Z and can handle the power. Then you make as sure as possible that everything SHOULD work according to plan. Then you work out a kill s; /archives//html/Amps/2022-09/msg00015.html (7,748 bytes)
7. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: "Peter Voelpel" <dj7ww@t-online.de>; Date: Mon, 12 Sep 2022 21:19:13 +0200; Yes, no difference, just bigger and more powerful. 73 Peter, DJ7WW Don Fox raises a question I've wondered about for years: how are these very high power amplifiers initially placed in service? Today; /archives//html/Amps/2022-09/msg00016.html (7,922 bytes)
8. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Donald Fox via Amps <amps@contesting.com>; Date: Mon, 12 Sep 2022 22:06:56 +0000 (UTC); One of the things I see that is different, as I have watched videos of the bigger transmitters firing up, is that they can bring the driver stages online, and have them drawing plate current, tune th; /archives//html/Amps/2022-09/msg00017.html (9,605 bytes)
9. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Mon, 12 Sep 2022 19:49:33 -0400; So, where does that drive power go while the driver(s) are being Drive power is relatively low and typically dissipated in the grid circuit of the succeeding stage. For example, the BTR1 (pair of 4-4; /archives//html/Amps/2022-09/msg00018.html (9,970 bytes)
10. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 12 Sep 2022 17:39:09 -0700; On 9/12/2022 4:49 PM, Joe Subich, W4TV wrote: Based upon that description, when WLW was running a full 500KW, I'd assume the engineer would set the carrier around 125KW, and then 100% modulation woul; /archives//html/Amps/2022-09/msg00019.html (8,957 bytes)
11. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: Donald Fox via Amps <amps@contesting.com>; Date: Tue, 13 Sep 2022 01:02:37 +0000 (UTC); Here is a pretty good read on WLW before and during their 500kw period. The article states in part, that "WLW began broadcasting with 500KW around the clock, in May of 1934." https://www.neh.gov/huma; /archives//html/Amps/2022-09/msg00020.html (11,151 bytes)
12. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: sm0aom--- via Amps <amps@contesting.com>; Date: Tue, 13 Sep 2022 07:13:53 +0200 (CEST); Having worked with really big transmitters; Telefunken 100 kW ISB and Thomson-CSF 500 kW carrier AM, tune-up works in very similar ways for all practical purposes. First the low-power drive stages ar; /archives//html/Amps/2022-09/msg00021.html (12,783 bytes)
13. Re: [Amps] 10 kw CCS on 6M (score: 1): Author: donroden@hiwaay.net; Date: Tue, 13 Sep 2022 09:56:44 -0500; I spent 40 years maintaining Broadcast transmitters. It was always my preference to get the final tube(s) close to their operating points before working my way back to the lowest power drivers. Keepi; /archives//html/Amps/2022-09/msg00023.html (12,262 bytes)

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