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1. Re: [Amps] Questions about Amps/Tubes/Design (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Sun, 16 Mar 2008 12:59:02 +1300; I'd be interested to know more about that. More below. My LK550 is still going but not quite perfectly. Maintenance/repairs so far have involved: - New set of HV supply smoothing caps and load-shari; /archives//html/Amps/2008-03/msg00134.html (9,239 bytes)
2. Re: [Amps] Relays (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Mon, 31 Mar 2008 21:57:04 +1300; Thanks all for the excellent advice and links on T/R relays and switching times. A wealth of knowledge. That fascinating thread has perhaps delayed the day when I either rig-up a test circuit to chec; /archives//html/Amps/2008-03/msg00380.html (9,886 bytes)
3. Re: [Amps] Test (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Tue, 29 Apr 2008 14:48:01 +1200; 5NNTT1 TNX MULT QRZ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2008-04/msg00318.html (6,465 bytes)
4. Re: [Amps] Damage? --> OT (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Sat, 26 Jul 2008 12:02:12 +1200; Some of the things you read on those audiophile magazines and websites are fabulously creative. I liked the one about a special 'spectral density' paint to apply to the chips in your CD player, supp; /archives//html/Amps/2008-07/msg00273.html (9,504 bytes)
5. Re: [Amps] Wire (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Tue, 29 Jul 2008 14:18:43 +1200; Hi Rich. There *may* be some cunning impedence reason but my guess is that the main driver for using Teflon insulated wire is good HV insulation coupled with low diameter. Personally, I find the str; /archives//html/Amps/2008-07/msg00347.html (8,682 bytes)
6. Re: [Amps] 234v - to convert or not? (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Mon, 15 Sep 2008 19:07:56 +1200; Agreed ... So why not measure the input mains voltage at or near the same socket and see how if performs when keying the amp? In my last house, I found I'd lose about 10V from 240V when the amp was; /archives//html/Amps/2008-09/msg00139.html (9,083 bytes)
7. Re: [Amps] Subject: SB-221 parasitic supression upgrade kit (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Sat, 22 Nov 2008 08:00:57 +1300; Hi Rick, Sounds good. I wonder if you are planning to write up your findings in any more detail? My Amp Supply Co LK550 eats vacuum relays for breakfast on QSK but I'm hoping to mod it and designing; /archives//html/Amps/2008-11/msg00214.html (8,647 bytes)
8. [Amps] Dumb question #37b - DC filament (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Sat, 24 Jan 2009 11:23:23 +1300; Hi all. I'm contemplating how best to regulate the filament voltages on my amps, and curious as to whether it's possible/sensible to use a regulated DC supply instead of the usual AC. Regulating DC i; /archives//html/Amps/2009-01/msg00275.html (7,197 bytes)
9. Re: [Amps] Digital read out (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Thu, 26 Feb 2009 16:43:13 +1300; I didn?t see the article but I can imagine something like this: a stabilised 3.6V or 36V supply across either end of a suitably-rated 360-degree potentiometer (rated to give a few milliamps standing; /archives//html/Amps/2009-02/msg00676.html (8,544 bytes)
10. Re: [Amps] Silver plating (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Thu, 9 Apr 2009 16:07:05 +1200; Hi Bill. Check this page: http://www.vhfdx.net/discuss/silverplating.html. The VHF guys say basically it's just for show: bare copper is as good. 73 Gary ZL2iFB _____________________________________; /archives//html/Amps/2009-04/msg00094.html (8,025 bytes)
11. Re: [Amps] European meterscale style: name? (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Mon, 25 May 2009 11:02:31 +1200; "Sector" or "Quadrant" or "Corner" would work for me Jim. It's easy enough to generate one and see how it looks, I guess! Thanks for releasing and maintaining this software. I was pleased to see the; /archives//html/Amps/2009-05/msg00182.html (8,379 bytes)
12. Re: [Amps] European meterscale style: name? (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Mon, 25 May 2009 14:46:43 +1200; Hi Dick, try this: http://tinyurl.com/pkb2td 73 Gary ZL2iFB _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2009-05/msg00184.html (7,092 bytes)
13. Re: [Amps] Not an RF amp but could pass for one......... (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Wed, 30 Dec 2009 16:31:45 +1300; Ah but his volume knob only goes up to ten ... 73 Gary "11" ZL2iFB _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/; /archives//html/Amps/2009-12/msg00565.html (8,252 bytes)
14. Re: [Amps] which HV connector to use?] (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Sun, 24 Jan 2010 21:01:23 +1300; Some people are just lucky at Russian roulette. Others prefer to avoid avoidable risks. Each to his own. FWIW I'm glad to hear about safer alternatives, and would be especially interested to hear abo; /archives//html/Amps/2010-01/msg00301.html (13,911 bytes)
15. Re: [Amps] New Handy Amp (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Tue, 8 Jun 2010 18:46:02 +1200; The Google Toolbar translater is even better than the BabelFish. Works FB on every page I've tried so far. It's uncanny to see a gibberish page of foreign redrawn in near-normal English (in my case); /archives//html/Amps/2010-06/msg00082.html (7,722 bytes)
16. [Amps] LK550 neg grid ... and bandswitch woes (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Thu, 25 Nov 2010 18:46:02 +1300; Gents, Any idea what fault would cause my old and previously faithful Amp Supply Co LK550 sometimes to register ~400mA of plate current and negative grid current, even with no PTT and no drive? First; /archives//html/Amps/2010-11/msg00431.html (7,402 bytes)
17. Re: [Amps] LK550 neg grid ... and bandswitch woes (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Sun, 12 Dec 2010 07:53:53 +1300; Thanks Ken - and sorry for the long pause. I've noticed that the anode choke is cooked so that will be replaced "soon as" as we say in ZL. I have one on order from Ameritron, now MFJ. Meanwhile, I ha; /archives//html/Amps/2010-12/msg00107.html (11,297 bytes)
18. Re: [Amps] LK550 neg grid ... and bandswitch woes (score: 1): Author: "Gary Hinson" <Gary@isect.com>; Date: Sun, 12 Dec 2010 11:58:22 +1300; Thanks Dick. While thankfully I haven't had to duck any flying crockery lately :-) I suspect I might have fried the anode choke by running the amp on 30m (using the 20m position since it has no WARC; /archives//html/Amps/2010-12/msg00115.html (8,153 bytes)

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