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21. [Amps] Mailing list for parasitic osciallations. (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Sun Mar 16 16:48:29 2003; I skip reading lots of posts that I am not interested in. Parasitics is not one that I skip. 73 Gary K4FMX; /archives//html/Amps/2003-03/msg00606.html (13,485 bytes)
22. [Amps] 813 No parasitics (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Tue Mar 18 21:04:40 2003; Wouldn't a VHF oscillation also cause a large low frequency current pulse the same as an arc would? 73 Gary K4FMX; /archives//html/Amps/2003-03/msg00696.html (8,248 bytes)
23. [Amps] Up thru the CB ranks (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Fri Mar 21 12:46:13 2003; I have never been able to make an 807 work in GG for that reason. 73 Gary K4FMX; /archives//html/Amps/2003-03/msg00755.html (9,038 bytes)
24. [Amps] Hard-drive Dive (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Mon Mar 24 23:19:50 2003; I have an amp with a pair of gg 813s with a burn in the middle of the choke. 73 Gary K4FMX; /archives//html/Amps/2003-03/msg00819.html (9,317 bytes)
25. [Amps] Hard-drive Dive (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Tue Mar 25 19:44:36 2003; Hi Rich, I am pretty sure that the choke is a National R175A. It has several pie sections on it. I think it is 145 micro henries. One catalogue says 225 but a couple of reference say 145. Never measu; /archives//html/Amps/2003-03/msg00824.html (8,510 bytes)
26. [Amps] Hard-drive Dive (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Tue Mar 25 22:10:12 2003; You are right Phil. It is not pie wound. I used the wrong term. It has about 5 sections on the lower part about 1/2 inch in height each and about an inch in diameter. Then a tall section on the top a; /archives//html/Amps/2003-03/msg00831.html (9,191 bytes)
27. [Amps] Filament Inrush Control (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Wed Mar 26 22:11:30 2003; I use one in a power supply I built. Works fine. Get a big buzz on the armature as it is engaging though. 73 Gary K4FMX; /archives//html/Amps/2003-03/msg00858.html (8,949 bytes)
28. [Amps] Resonant Choke Filters (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Thu Mar 27 21:06:37 2003; It may be a little more complicated than that. It seems most have lots of trouble getting the choke tuned just right. I am not so sure that different types of chokes may be more stable in their induc; /archives//html/Amps/2003-03/msg00898.html (6,936 bytes)
29. [Amps] National R-175 Choke (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Fri Mar 28 20:53:47 2003; Hi Eric, I am the one with the R175A in the 813 amp with a burned section. 73 Gary K4FMX; /archives//html/Amps/2003-03/msg00915.html (7,553 bytes)
30. [Amps] Voodoo Magnetic Fields (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Sat Feb 8 21:27:11 2003; Hi Rich, If you can estimate the duration of the pulse that causes havoc maybe you could then determine how much current would be present to cause the a short duration pulse. 73 Gary K4FMX; /archives//html/Amps/2003-02/msg00189.html (9,921 bytes)
31. [Amps] Voodoo Magnetic Fields (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Sat Feb 8 21:29:25 2003; One of the big fears when MRI machines are operating is that someone forgets and leaves a pen in his pocket. 73 Gary K4FMX; /archives//html/Amps/2003-02/msg00190.html (9,550 bytes)
32. Spam Alert: Re: [Amps] The Philosophy of Science (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Tue Feb 11 20:58:14 2003; My vote it that there is an excessive amount of ego bolstering going on. Nothing more nothing less. 73 Gary K4FMX; /archives//html/Amps/2003-02/msg00271.html (13,130 bytes)
33. [Amps] Voodoo Magnetic Fields (score: 175): Author: garyschafer at attbi.com (Gary Schafer); Date: Tue Feb 11 21:02:17 2003; Thanks Ian, Very informative! 73 Gary K4FMX; /archives//html/Amps/2003-02/msg00272.html (15,936 bytes)

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