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Total 4 documents matching your query.

1. [Amps] Heathkit HA-14 filaments (score: 1): Author: Bill Fuqua <wlfuqu00@uky.edu>; Date: Tue, 31 May 2005 09:29:49 -0400; To my surprise I found that the filaments of the HA-14 were not driven by a center-tapped AC filament transformer when using the AC power supply. I can see that this can be a real source of 60 Hz mod; /archives//html/Amps/2005-05/msg00325.html (6,539 bytes)
2. Re: [Amps] Heathkit HA-14 filaments (score: 1): Author: Joe Giacobello <k2xx@swva.net>; Date: Tue, 31 May 2005 12:35:29 -0400; Bill, I once used one for about a year. I never got any reports of a bad CW note nor did I detect any problem when I personally monitored the signal. 73, Joe _________________________________________; /archives//html/Amps/2005-05/msg00326.html (7,344 bytes)
3. Re: [Amps] Heathkit HA-14 filaments (score: 1): Author: Bill Fuqua <wlfuqu00@uky.edu>; Date: Wed, 01 Jun 2005 11:52:30 -0400; I am a bit surprised that I did not get any response to my email about the non-center-tapped filament in the HA14. The two 572B tubes have their filaments wired in series one end of the string ground; /archives//html/Amps/2005-06/msg00002.html (8,873 bytes)
4. Re: [Amps] Heathkit HA-14 filaments (score: 1): Author: "S. J. Blackwell" <w5lu@hotmail.com>; Date: Wed, 01 Jun 2005 17:42:36 -0500; The HA-14 was designed for mobile operation-- the reason for the series 6.3 V fils. 73, Sam _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesti; /archives//html/Amps/2005-06/msg00003.html (6,435 bytes)

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