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Total 16 documents matching your query.

1. [Amps] SB 220 Exploding Resistor (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Sun, 17 Jan 2016 09:05:58 -0700
HiMy SB 220 has what appears to be a glass coated wirewound resistor in series with the anode B+ supply lead just before the RF chokes. It is not on the schematic so must have been a modification don
/archives//html/Amps/2016-01/msg00019.html (7,049 bytes)

2. Re: [Amps] Decline of homebrewing? (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Thu, 5 Jan 2017 07:25:11 -0700
JeffWell said and I like your idea about the coax jumpers. However, from what I have seen, it will still be just a bunch of old guys putting them together. The youngsters, sadly, are too busy playing
/archives//html/Amps/2017-01/msg00085.html (9,781 bytes)

3. Re: [Amps] Contacts Cleaner (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 23 Jan 2018 06:47:44 -0700
JoeDeoxit works good for that. You can get it from a myriad of places. Seems to be the go-to product for cleaning switches, tube sockets, etc. Tom K0SN _______________________________________________
/archives//html/Amps/2018-01/msg00130.html (8,186 bytes)

4. Re: [Amps] Non metallic paint for plywood ? (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 22 Oct 2019 20:00:11 -0600
JimHow about using a piece of 1/4" or so thick piece of plastic on top of the plywood under the choke? Then you wouldn't have to worry about the paint. Tom H K0SN ____________________________________
/archives//html/Amps/2019-10/msg00063.html (8,863 bytes)

5. Re: [Amps] Dielectric grease for roller inductors? (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Thu, 2 Jan 2020 18:42:15 -0700
W8JI has a pretty good article about conductive vs dielectric grease on his website. It certainly cleared up the question for me. Google will take you there. Tom H K0SN ______________________________
/archives//html/Amps/2020-01/msg00002.html (10,835 bytes)

6. [Amps] Amp Supply Amps (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 15 Dec 2020 13:36:22 -0700
Recently inherited a LK 800C and a LK 500 NT from the estate of an SK. I know nothing about this particular brand of amp. Any input from members of the group would be appreciated. Are they worth keep
/archives//html/Amps/2020-12/msg00023.html (6,924 bytes)

7. Re: [Amps] SB-220 (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 30 Mar 2021 09:30:21 -0600
I, too, am curious as to how it has been determined that more L is needed. I have another amp, an LK-800C, that acts like it needs more C in the output network, but maybe the underlying issue is that
/archives//html/Amps/2021-03/msg00048.html (9,801 bytes)

8. [Amps] W7RY Products (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Fri, 14 May 2021 07:04:35 -0600
I looked around for W7RY's website that offers his boards for the SB220 amp, etc. Google couldn't find it, although admittedly I did not check out every search result. But it didn't return any with W
/archives//html/Amps/2021-05/msg00041.html (7,071 bytes)

9. [Amps] SB220 Help (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Fri, 21 May 2021 08:55:03 -0600
Hi FolksHas anybody here ever added the QSK modification published in the 90's by Rich Measures successfully and willing to give a little technical help with it? I have a pretty good grasp of everyth
/archives//html/Amps/2021-05/msg00046.html (6,403 bytes)

10. Re: [Amps] Cleaning open frame TR relay (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Wed, 30 Jun 2021 10:47:33 -0600
MarkI have successfully used one of those little rubber ribbed tooth picks dipped in Deoxit. Or pull a piece of paper through while holding the contacts against it. Tom K0SN _________________________
/archives//html/Amps/2021-06/msg00025.html (7,957 bytes)

11. [Amps] LK800C Help (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Mon, 6 Dec 2021 16:51:09 -0700
I have an Amp Supply LK800C TNY that's had a couple previous owners. Just finished putting in a vac variable tune cap with turns counter, for which I had to remove and strip the front panel. I noted
/archives//html/Amps/2021-12/msg00054.html (6,913 bytes)

12. Re: [Amps] Gigavac GH1 mounting bracket (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 8 Feb 2022 19:05:07 -0700
I do. If you have a hacksaw and a drill with one of those fancy cone-shaped stepped bits, its a piece of cake. Buy a piece of aluminum angle with 1/8 wall thickness. Tom K0SN ________________________
/archives//html/Amps/2022-02/msg00003.html (7,835 bytes)

13. Re: [Amps] Kenwood TL-922 Loading Cap Needed (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Tue, 12 Apr 2022 08:31:21 -0600
Is there something unusual about the TL922 load cap that makes it impossible to find a generic variable that will fit into the space? We inherited a box full from an estate a while ago, possibly ther
/archives//html/Amps/2022-04/msg00004.html (8,162 bytes)

14. [Amps] Doorknob Caps Wanted (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Wed, 11 May 2022 08:23:43 -0600
Anybody have some extra 500 pf doorknobs at around 5 KV that you would be willing to sell? Or does anybody know of a good source for same? Used or new. 73 Tom K0SN ___________________________________
/archives//html/Amps/2022-05/msg00001.html (6,326 bytes)

15. Re: [Amps] HF2500 - 15 meter problem (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Fri, 26 Aug 2022 18:07:38 -0600
SteveI think W8JI indeed does offer plate chokes for sale. The best way to contact him seems to be on the Facebook Ameritron amps user group. He says that he goes for many days without checking his C
/archives//html/Amps/2022-08/msg00039.html (15,350 bytes)

16. Re: [Amps] Alpha Max upgrade (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Fri, 24 Feb 2023 09:07:39 -0700
LonCan we assume George's email address ends in .com? Tom K0SN _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2023-02/msg00011.html (7,199 bytes)

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