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1. [Amps] Henry 3K-A choke failure...workaround? (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Thu, 26 Sep 2019 22:07:10 -0400; Hello wise ones... Bought a nice 3K-A at a flea market and made one SSB contact. On the second contact it tripped off on HV overcurrent. After some debugging, the Plate choke is leaky to ground at HV; /archives//html/Amps/2019-09/msg00070.html (7,206 bytes)
2. Re: [Amps] Henry 3K-A choke failure...workaround? (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Fri, 27 Sep 2019 13:43:56 -0400; Hi Ron, I like the idea of putting the choke in the return lead. But the way the return floats a bit above ground for metering makes me uncertain exactly where to wire in choke. - between bridge and; /archives//html/Amps/2019-09/msg00076.html (8,696 bytes)
3. Re: [Amps] Henry 3K-A choke failure...workaround? (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Fri, 27 Sep 2019 18:10:12 -0400; yes, HV filter choke. The RF choke would not work well in the ground lead. ;-). jeff, wa1hco _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contest; /archives//html/Amps/2019-09/msg00080.html (10,421 bytes)
4. Re: [Amps] Henry 3K-A choke failure...workaround? (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Fri, 27 Sep 2019 18:15:56 -0400; I don't think it's really a swinging choke. Just a 8 or 10 H choke that varies a bit with DC current. jeff, wa1hco _______________________________________________ Amps mailing list Amps@contesting.co; /archives//html/Amps/2019-09/msg00081.html (11,579 bytes)
5. Re: [Amps] HV Inductor in the return lead (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Sat, 5 Oct 2019 23:00:56 -0400; I'm trying to show that are actually two ways to put the choke in the return lead. I'm still interested in which people recommend. Putting the choke in the return lead is simple. But there are two wa; /archives//html/Amps/2019-10/msg00012.html (7,561 bytes)
6. [Amps] Henry 3K-A with Peter Dahl plate transformer. (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Sat, 5 Oct 2019 23:05:54 -0400; Hello list... The flea market 3K-A has a Peter Dahl plate transformer, part number looks like "3KA PLATE". Was this standard in the 3K-A or is this a replacement? thanks, jeff, wa1hco _______________; /archives//html/Amps/2019-10/msg00013.html (6,735 bytes)
7. Re: [Amps] Modern Op-Amp shunt stabilizator power supply (for tetrodescr (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Thu, 3 Mar 2022 10:14:46 -0500; Consider the arc as a zero ohm resistor. The current peak is limited by the glitch resistor and the impedance of the HV caps jeff, wa1hco _______________________________________________ Amps mailing; /archives//html/Amps/2022-03/msg00003.html (9,753 bytes)
8. Re: [Amps] Measuring filament voltage (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Wed, 20 Jul 2022 09:35:42 -0400; Suggest adding a bluetooth link from filament to control panel to further the scheme. jeff, wa1hco _______________________________________________ Amps mailing list Amps@contesting.com http://lists.c; /archives//html/Amps/2022-07/msg00007.html (8,338 bytes)
9. Re: [Amps] 10 KW CCS ON 6M...USING THE 3CX-6000A7... PART 12 (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Wed, 30 Nov 2022 13:55:45 -0500; Thank you for doing this. I find both video and your emails informative. jeff, wa1hco _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com; /archives//html/Amps/2022-11/msg00095.html (9,715 bytes)
10. Re: [Amps] three phase (try again) (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Thu, 29 Dec 2022 23:56:44 -0500; If the HV supply uses choke input, then probably ok to use a VFD. Cap input filters have extreme current peaks at the peak of the line cycle. I made my own 3 phase converter from a used 3 Phase motor; /archives//html/Amps/2022-12/msg00161.html (8,555 bytes)
11. Re: [Amps] rectifier diode strings (score: 1): Author: jeff millar <wa1hco@gmail.com>; Date: Wed, 1 Mar 2023 16:52:53 -0500; this was discussed in some detail within the last few months jeff, wa1hcp _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/lis; /archives//html/Amps/2023-03/msg00006.html (7,867 bytes)

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