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References: [ +from:k5am@zianet.com: 26 ]

Total 26 documents matching your query.

21. Re: [Amps] Life of tubes in ham service - Correction (score: 1)
Author: "Mark, K5AM" <k5am@zianet.com>
Date: Wed, 27 Dec 2017 00:27:18 +0000
Correction: Should have said fig 5 on page 7. The heater regulator limits the heater current to slightly over the normal level. This provides a slow warm-up. It takes over a minute to reach normal he
/archives//html/Amps/2017-12/msg00163.html (8,549 bytes)

22. Re: [Amps] Series C in amp output (score: 1)
Author: "Mark, K5AM" <k5am@zianet.com>
Date: Wed, 14 Feb 2018 18:15:04 +0000
Concerning HV protection at amplifier output. ... Good idea. In fact, I did that in my 1971 HF amplifier. Details in the parts list on page 2 at: www.zianet.com/k5am/amphfkw.pdf (More at www.zianet.c
/archives//html/Amps/2018-02/msg00029.html (8,715 bytes)

23. Re: [Amps] Series C in amp output (score: 1)
Author: "Mark, K5AM" <k5am@zianet.com>
Date: Thu, 15 Feb 2018 21:23:37 +0000
Bill, the amplifier was built in 1971, and ran with the first tube for 17 years. That tube still ran perfectly, but I had a few spares on the shelf, and read somewhere that it was good to rotate them
/archives//html/Amps/2018-02/msg00031.html (10,683 bytes)

24. Re: [Amps] Push pull amps (score: 1)
Author: "Mark, K5AM" <k5am@zianet.com>
Date: Sat, 1 Aug 2020 19:53:20 +0000
Push-pull is a nice method. The link below shows a push-pull amp I built 59 years ago; it still runs full power with the original Eimac tubes. http://www.zianet.com/k5am/amp6mkw.html 73, Mark, K5AM O
/archives//html/Amps/2020-08/msg00007.html (9,179 bytes)

25. [VHFcontesting] 6M CW (score: 1)
Author: "Mark, K5AM" <k5am@zianet.com>
Date: Sun, 23 Oct 2022 21:37:35 +0000
2022 June 11-13 .. K5AM .. 131 CW QSOs (SSB only 126, digital none) I hope Jim's remarks do not discourage anyone from tuning 50,080 to 50,100 during the next VHF contest. 73, Mark, K5AM ____________
/archives//html/Amps/2022-10/msg00047.html (7,783 bytes)

26. [Amps] 6M CW (score: 1)
Author: "Mark, K5AM" <k5am@zianet.com>
Date: Sun, 23 Oct 2022 22:37:44 +0000
On 2022-10-22 08:40, Jim Brown wrote: CW has been dead on 6M, ... the last CW signal I heard on 6M was 4 years ago, ... 73, Jim K9YC 2022 June 11-13 .. K5AM .. 131 CW QSOs (SSB only 126, digital none
/archives//html/Amps/2022-10/msg00048.html (7,741 bytes)

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