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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Anyone\s+ever\s+use\s+a\s+6C21\?\s*$/: 9 ]

Total 9 documents matching your query.

1. [Amps] Anyone ever use a 6C21? (score: 1)
Author: Mark Foltarz <Foltarz@rocketmail.com>
Date: Tue, 4 Nov 2003 12:52:45 -0800 (PST)
Anyone ever build an amp with a 6C21? It is supposed to be similar to a 450th. tnx de KA4JVY Mark __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard
/archives//html/Amps/2003-11/msg00044.html (6,841 bytes)

2. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: R.Measures <r@somis.org>
Date: Wed, 5 Nov 2003 04:57:30 -0800
A 450TH should do OK in g-g linear service, however, since the Mu is only 38, power gain should be only c. 6 or 7. Thus, it would probably take 200w to drive one to the speed limit. If I were going t
/archives//html/Amps/2003-11/msg00059.html (8,035 bytes)

3. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Wed, 5 Nov 2003 20:00:29 -0700
Mark: I built an AM "transmitter" using a pair of 6C21in push-pull several years ago. The tube is very much the same as the 450. Eimac specs call for 8.3 volt filament voltage, but that was for pulse
/archives//html/Amps/2003-11/msg00067.html (8,435 bytes)

4. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Thu, 6 Nov 2003 20:18:43 -0700
That's interesting, Rich. Previously, you mentioned a plate voltage of something on the order of 8 KV for linear service. I'm thinking that the 6C21/450 would be a "fun" 160M only amp. Given that I
/archives//html/Amps/2003-11/msg00074.html (8,057 bytes)

5. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: R.Measures <r@somis.org>
Date: Thu, 6 Nov 2003 06:27:09 -0800
** A triode with a Mu of 38 is OK for linear service, but only in g-g configuration, However, the drive requirement would be higher than it would be for high-Mu tubes. ______________________________
/archives//html/Amps/2003-11/msg00075.html (8,232 bytes)

6. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: R.Measures <r@somis.org>
Date: Thu, 6 Nov 2003 19:51:55 -0800
** It should work on higher bands too. ** Probably c. 1.5kW PEP out with 200w drive. However, if more drive is available, c. 2800w PEP should be possible (8kV at 600mA in x 60% eff., tuning pulser t
/archives//html/Amps/2003-11/msg00079.html (8,797 bytes)

7. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Fri, 7 Nov 2003 20:18:39 -0700
Rich: Leaning on your expertise further, I have several 450THs. Would these be easier to drive, or yield greater output for given drive, in GG? 73, Barrie, W7ALW KV __________________________________
/archives//html/Amps/2003-11/msg00088.html (9,762 bytes)

8. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: R.Measures <r@somis.org>
Date: Sat, 8 Nov 2003 05:23:32 -0800
** Barrie -- G-G is the only game in town for a triode linear. Grid-driven is for triodes in Class C. With a Mu in the 30s, G-G gain will be low, but still enough to be worthwhile - especially with a
/archives//html/Amps/2003-11/msg00102.html (10,386 bytes)

9. Re: [Amps] Anyone ever use a 6C21? (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Sun, 23 Nov 2003 19:42:37 -0700
Mark: I just found an "Eimac amateur service newsletter", authored by Bill Orr, W6SAI, with the recommended ratings for the 6C21. I could scan it, or copy it for you. Interesting that the filament cu
/archives//html/Amps/2003-11/msg00332.html (9,169 bytes)

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