Mail Archive Search: <+from:mcgrath@fas.harvard.edu>

Results:

References: [ +from:mcgrath@fas.harvard.edu: 59 ]

Total 59 documents matching your query.

1. [Amps] Wanted ICOM IC-2KLPS any condition (score: 1): Author: "Scott C. McGrath" <mcgrath@fas.harvard.edu>; Date: Thu, 18 Oct 2007 10:24:27 -0400; Wanted a Icom IC-2KLPS power supply for ICOM IC-2KL amplifier Shipped to 03303 or 02138 Scott - N1JIN _______________________________________________ Amps mailing list Amps@contesting.com http://list; /archives//html/Amps/2007-10/msg00214.html (6,680 bytes)
2. Re: [Amps] Dentron 160-10L (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Wed, 24 Oct 2007 11:02:47 -0400; 1 - DISCHARGE HV SAFELY and MEASURE TO MAKE SURE THERE IS NO VOLTAGE ON THE PLATE SUPPLY 2 - remove the tubes 3 - power AMP up again 4 - check Ip again if Ip == 0 then the tubes are probably at fault; /archives//html/Amps/2007-10/msg00240.html (7,086 bytes)
3. Re: [Amps] Vertex_Yaesu Merger (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 06 Nov 2007 11:43:40 -0500; Well now Yaesu's dumping of repair support of everything they built prior to 2003 back in March makes sense now did not want the repair liability to derail the deal. By time this deal is done the onl; /archives//html/Amps/2007-11/msg00082.html (10,888 bytes)
4. Re: [Amps] Vertex_Yaesu Merger (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 06 Nov 2007 13:04:26 -0500; I suggest a CLOSE reading of the discontinuance notice all support was dropped for equipment manufactured prior to 2003 so if you bought a 767 in 2001 you were SOL early model FT-2000's are in the sa; /archives//html/Amps/2007-11/msg00087.html (15,381 bytes)
5. Re: [Amps] SB-200 and SB-220 meters (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 06 Nov 2007 13:15:02 -0500; Simple technique 1 - remove the old meter scale from meter 2 - scan into your favorite image editor (photoshop et al) 3 - make appropriate color corrections (Auto Contrast, Auto Levels in photoshop m; /archives//html/Amps/2007-11/msg00088.html (8,414 bytes)
6. Re: [Amps] Tank circuit arcing (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Wed, 09 Jan 2008 13:12:41 -0500; The insulating coatings suggested are not going to solve the primary issue which is high RF voltages developed in the tank circuit. since you are running out of inductance that suggests that the amp'; /archives//html/Amps/2008-01/msg00086.html (9,262 bytes)
7. Re: [Amps] Dentron Clipperton L Questions (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Sun, 27 Jan 2008 20:59:34 -0500; That's about right for one of these amps. If they have not been changed you might want to replace the caps, bleeders and diodes on the PS as those are the weak points in this nearly 30 y/o amp and al; /archives//html/Amps/2008-01/msg00223.html (12,233 bytes)
8. Re: [Amps] Silver (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Mon, 11 Feb 2008 14:31:14 -0500; 1 - Photoshop use the "magic wand" tool to select the coil and use the eyedropper to fill it with a appropriate silver tone. 2 - Tarn-X available at hardware store a acid base cleaner which reduces t; /archives//html/Amps/2008-02/msg00055.html (6,907 bytes)
9. Re: [Amps] Silver (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 12 Feb 2008 12:43:12 -0500; Tarn-X is a acid bath _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2008-02/msg00059.html (9,318 bytes)
10. Re: [Amps] Silver (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 12 Feb 2008 14:02:11 -0500; Masons use this under the form of "Muriatic Acid" as I recall the concentration is around 37% _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contes; /archives//html/Amps/2008-02/msg00062.html (9,135 bytes)
11. Re: [Amps] (no subject) (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 19 Feb 2008 15:10:28 -0500; rod laser or Photoflash as the physical dimensions are about right for that application (rod laser uses xenon discharge tube as a optical excitation source) Both are charged slowly from a HV DC sourc; /archives//html/Amps/2008-02/msg00132.html (8,376 bytes)
12. Re: [Amps] re 77 mhz to 88 mhz vhf band usage (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 25 Mar 2008 11:36:39 -0400; Military world wide _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2008-03/msg00257.html (8,177 bytes)
13. Re: [Amps] Refurbishing old amps (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Fri, 28 Mar 2008 13:25:23 -0400; Dishwasher with no soap or VERY LITTLE say 1/2 tsp - set on sterilize cycle cleans everything beautifully hot water dissolves all the gunk and the heat dries everything thoroughly and then set things; /archives//html/Amps/2008-03/msg00319.html (9,610 bytes)
14. Re: [Amps] Painting xfmrs (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Mon, 05 May 2008 16:08:51 -0400; Some modern solvents might attack the insulation on the coils - I might instead clean and use rubbing compound and a cloth on the metal parts _______________________________________________ Amps mail; /archives//html/Amps/2008-05/msg00050.html (8,299 bytes)
15. Re: [Amps] liquid cooled Amplifier coolant recommendations (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Fri, 16 May 2008 10:18:39 -0400; Mineral oil works well - high thermal conductivity and a insulator as well _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/li; /archives//html/Amps/2008-05/msg00107.html (9,266 bytes)
16. Re: [Amps] liquid cooled Amplifier coolant recommendations (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Fri, 16 May 2008 14:53:49 -0400; Great Site! _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2008-05/msg00111.html (10,644 bytes)
17. Re: [Amps] AL-1200 - MO Power?? (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Tue, 20 May 2008 16:10:23 -0400; Is it really worth stressing the amplifier for a <1Db gain in output power. Also IMD will increase the warning is probably directed at preventing insulation breakdown in the secondary windings and/or; /archives//html/Amps/2008-05/msg00133.html (8,800 bytes)
18. Re: [Amps] Alpha 8410 -- The Market should be D.O.A. (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Wed, 04 Jun 2008 21:30:51 -0400; Commercial practice STILL uses tubes for 1KW and above. I have a Icom 2KL which works nicely IF the SWR is less than 2:1 - IT NEEDS its companion AT-500 (which I also have) to keep it happy Also have; /archives//html/Amps/2008-06/msg00017.html (9,721 bytes)
19. Re: [Amps] Alpha 8410 -- The Market should be D.O.A. (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Wed, 04 Jun 2008 23:33:40 -0400; GeeWiz, 1KW comes from I was talking about high power which generally starts at 1KW and up Guess all the broadcast stations up here are behind the times because they use tubes instead of SS the excit; /archives//html/Amps/2008-06/msg00019.html (14,731 bytes)
20. Re: [Amps] The Market should be D.O.A. (score: 1): Author: Scott McGrath <mcgrath@fas.harvard.edu>; Date: Thu, 05 Jun 2008 11:36:12 -0400; Gee I wonder why NYC center of media on the east coast would have the latest equipment especially with most of the major networks headquartered there. Try living north of Boston and see what 's up he; /archives//html/Amps/2008-06/msg00027.html (9,496 bytes)

Current List: 1 - 20
Page: [1] [2] [3]