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21. Re: [Amps] Power Switch (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Wed, 02 Jul 2008 10:55:11 -0400
Try NTE electronics - http://nteelectronics.com They specialize in the electronic service supply business so they probably have something _______________________________________________ Amps mailing
/archives//html/Amps/2008-07/msg00014.html (7,959 bytes)

22. [Amps] Anyone have a plate transformer suitable for a Gonset GSB-101 (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Sun, 24 Aug 2008 15:57:36 -0400
Hi, Any one have a plate transformer lying around with the following specs Primary 110V 1800-2200 VCT @ 600-800MA Found a nice but partially stripped Gonset GSB-101 amp at local hamfest - Thanks Scot
/archives//html/Amps/2008-08/msg00135.html (6,640 bytes)

23. Re: [Amps] Transformer reliability? 34yr old Collins... (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Fri, 03 Oct 2008 09:33:07 -0400
You can bake it in a 175-200 degree oven for 6-12 hours and that will dry it out. Do this while XYL is out. Barring that get a pound or two of silica gel from a craft store and place it and xfrmr in
/archives//html/Amps/2008-10/msg00013.html (10,056 bytes)

24. Re: [Amps] Join kf4yox on Yahoo! Messenger! (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Wed, 17 Dec 2008 22:59:06 -0500
All, We may be seeing more of this as Yahoo has changed their mail system to incorporate 'social networking' features as represented by MySpace and Facebook. and/or LinkedIn (Corporate MySpace) So a
/archives//html/Amps/2008-12/msg00255.html (13,166 bytes)

25. Re: [Amps] pole transformer (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Thu, 05 Feb 2009 12:35:14 -0500
There is no totally safe chemical I suggest a quick google for "DiHydrogen Monoxide" _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/
/archives//html/Amps/2009-02/msg00117.html (15,431 bytes)

26. Re: [Amps] pole transformer (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Thu, 05 Feb 2009 16:12:04 -0500
-- MATERIAL SAFETY DATA SHEET FOR DIHYDROGEN MONOXIDE -- PRODUCT NAME: DIHYDROGEN MONOXIDE FORMULA WT: 18.00 CAS NO.: 07732-18-5 NIOSH/RTECS NO.: ZC0110000 COMMON SYNONYMS: DIHYDROGEN OXIDE, HYDRIC A
/archives//html/Amps/2009-02/msg00131.html (11,365 bytes)

27. Re: [Amps] pole transformer (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Fri, 06 Feb 2009 13:02:52 -0500
I know - part of the hysteria surrounding hazardous materials is from the dismal state of scientific education in the US reinforced by irresponsible disposal practices in the past and subseqent irres
/archives//html/Amps/2009-02/msg00153.html (14,336 bytes)

28. Re: [Amps] The SB220 Mystique (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Tue, 10 Feb 2009 12:00:11 -0500
The SB-220 has always been popular even when new, That's why it seems to be everywhere it is a reasonably rugged forgiving amplifier which provides full legal input. It's simply a basic amplifier whi
/archives//html/Amps/2009-02/msg00266.html (9,113 bytes)

29. Re: [Amps] The SB220 Mystique (score: 1)
Author: "Scott C. McGrath" <mcgrath@fas.harvard.edu>
Date: Tue, 10 Feb 2009 14:53:34 -0500
I would agree with that point. This amp is a great starter amp as after you bring one back from the dead you are ready to build your own if you so desire Scott N1JIN Now if Heath Educational Systems
/archives//html/Amps/2009-02/msg00279.html (11,203 bytes)

30. Re: [Amps] [TekScopes] Dave Miller, AA4DF (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Thu, 12 Feb 2009 13:34:23 -0500
Very high quality scans and quick service - Scott _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-02/msg00371.html (8,301 bytes)

31. Re: [Amps] SB-220 troubles (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Thu, 12 Feb 2009 13:45:54 -0500
Bad caps - blown diode was your first clue HVPS is designed to take the interlock crowbar on the plate supply without failure. You could have a fresh internal short on the tubes as well. To test once
/archives//html/Amps/2009-02/msg00372.html (9,810 bytes)

32. Re: [Amps] SB-220 troubles (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Fri, 13 Feb 2009 07:53:41 -0500
The idiot who gets killed will be someone 2 days and no sleep into a contest when they lose a tube and want to quickly switch it out forgetting in their fatigued state to discharge the caps to ground
/archives//html/Amps/2009-02/msg00408.html (11,068 bytes)

33. Re: [Amps] SB-220 troubles (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Fri, 13 Feb 2009 07:55:42 -0500
Think "bleeder resistor fails open circuit" Scott N1JIN _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-02/msg00409.html (8,967 bytes)

34. Re: [Amps] SB-220 troubles (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Fri, 13 Feb 2009 08:01:17 -0500
Relatively easy Second switch connected to power resistor calculated to limit current to 1A or so this would discharge PS safely, This switch would close before the shorting crowbar, The shorting cro
/archives//html/Amps/2009-02/msg00410.html (9,885 bytes)

35. Re: [Amps] SB-220 troubles (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Fri, 13 Feb 2009 14:16:40 -0500
In my case aviation with the ATC suffix Heavy - In general aviation you screw up and we read about a SK who's other hobby was flying, in commercial it leads on CNN. The safety habits learned last a l
/archives//html/Amps/2009-02/msg00428.html (11,341 bytes)

36. Re: [Amps] SB-220 troubles (score: 1)
Author: "Scott C. McGrath" <mcgrath@fas.harvard.edu>
Date: Wed, 18 Feb 2009 08:39:16 -0500
I also am a experimenter I play up in the microwave ranges where the amplified RF is somewhat dangerous. In my line of work I see far too little of what used to be known as common sense. Of course a
/archives//html/Amps/2009-02/msg00546.html (11,767 bytes)

37. Re: [Amps] XFRM forDENTRON DTR-2000l (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Fri, 20 Feb 2009 11:33:29 -0500
Harbach electronics took over for Peter Dahl and are making transformers again they have a replacement _______________________________________________ Amps mailing list Amps@contesting.com http://lis
/archives//html/Amps/2009-02/msg00591.html (7,025 bytes)

38. Re: [Amps] Henry 2KD5 Multimeter replacement of repair (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Thu, 05 Mar 2009 17:10:33 -0500
Try Henry Radio for starters and Beede Electric is still with us as well www.beede.com _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.co
/archives//html/Amps/2009-03/msg00182.html (7,462 bytes)

39. Re: [Amps] Special audio vacuum (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Thu, 02 Apr 2009 15:20:19 -0400
Or the $600 ethernet cable from HarmonKardon... Directional no less _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/
/archives//html/Amps/2009-04/msg00038.html (7,757 bytes)

40. [Amps] High SWR (score: 1)
Author: Scott McGrath <mcgrath@fas.harvard.edu>
Date: Thu, 23 Apr 2009 11:50:32 -0400
SWR is an obsession with the CB set and some others CB's could not tolerate a high SWR due to the cheap finals used the high RF voltages would blow the junction. This effect created the oral traditio
/archives//html/Amps/2009-04/msg00261.html (8,413 bytes)

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