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1. [Amps] output of SB220 typical TSPA (score: 1): Author: "John T. M. Lyles" <jtml@lanl.gov>; Date: Mon, 17 Jul 2006 11:12:52 -0600; I concur with W8JI here, as I have never seen more than 1300 watts from my SB220 using a Bird 43 and a peak reading modification to it, with my IC735 flat out at 100 Watts of drive. Maybe some peopl; /archives//html/Amps/2006-07/msg00526.html (7,382 bytes)
2. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 17 Jul 2006 13:40:45 -0400; John, I don't think line voltage would amount to much, maybe 50-60 VDC more if there was a 5 VAC raise on the line. I don't think that's enough to get 200 more watts. My guess is the wattmeters some; /archives//html/Amps/2006-07/msg00531.html (8,282 bytes)
3. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: Joe Isabella <n3ji@yahoo.com>; Date: Mon, 17 Jul 2006 11:21:46 -0700 (PDT); I was getting approximately 1100-1400W PEP on SSB out of my TL-922 (depending on band) with fresh 3-500ZGs and 245V+ line V with 100W drive, FWIW. Joe, N3JI John, I don't think line voltage would amo; /archives//html/Amps/2006-07/msg00540.html (8,981 bytes)
4. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: "k7rdx" <k7rdx@charter.net>; Date: Mon, 17 Jul 2006 14:26:11 -0700; Joe,what was the filament voltage with that kind of line input? Excessive filament voltage allows more than normal emission with thoriated tungsten fils...At least for a while! 73, Jim K7RDX.. -- Ori; /archives//html/Amps/2006-07/msg00543.html (10,136 bytes)
5. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 17 Jul 2006 19:19:12 -0400; Jim, A single tube will easily make 1200 watts or more with enough drive at 3000 volts, and you don't have to run the filament extra hot to do it. There isn't any doubt at all people are seeing 2kW; /archives//html/Amps/2006-07/msg00549.html (8,048 bytes)
6. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: Joe Isabella <n3ji@yahoo.com>; Date: Mon, 17 Jul 2006 17:34:41 -0700 (PDT); 1100 or so on 10m, 1400ish on 75. I dont have a 160m antenna, so I never tried it on that band... Definitely could've been meter accuaracy issues since it was low on the high bands and higher on the; /archives//html/Amps/2006-07/msg00550.html (8,685 bytes)
7. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: "k7rdx" <k7rdx@charter.net>; Date: Mon, 17 Jul 2006 18:30:21 -0700; Agreed Tom...My question was why would someone run an amp with that value of line voltage if he knew the effect it would have on the fils.I do know for a fact that a lot of the Chinese 3-500z tubes h; /archives//html/Amps/2006-07/msg00552.html (9,835 bytes)
8. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: Joe Isabella <n3ji@yahoo.com>; Date: Tue, 18 Jul 2006 05:12:48 -0700 (PDT); Jim, That's precisely why I installed the thin teflon insulated wire (22 AWG I think) from the xfmr to the tubes fil pins. It definitely was a concern!! Short of running it on a Variac all the time (; /archives//html/Amps/2006-07/msg00562.html (10,610 bytes)
9. Re: [Amps] output of SB220 typical TSPA (score: 1): Author: R L Measures <r@somis.org>; Date: Mon, 17 Jul 2006 16:25:50 -0700; The rated anode current is 400mA max. 3000v x 400mA = 1200W input. 1200w output seems a bit far fetched, Tom. R L MEASURES, AG6K. 805-386-3734 r@somis.org ____________________________________________; /archives//html/Amps/2006-07/msg00566.html (9,891 bytes)

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