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References: [ +from:drpal@waterw.com: 15 ]

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1. [AMPS] email change (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Mon, 13 Sep 1999 19:08:54 -0400; Sorry to use the reflector for this, but... I am switching over to cable modem @home.com and how do I continue with my reflectors (dx4winb and amps) ? My email address will change to hopefully W2GE@h; /archives//html/Amps/1999-09/msg00107.html (6,551 bytes)
2. [AMPS] 2 amp questions (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Wed, 04 Aug 1999 12:18:08 -0400; Pse help, somewhat beginner type questions.... SB-200 to six conversion 1.) I want to work on the input network. I am not perfectly sure abt the resistors for tube impedance. If I understand correctl; /archives//html/Amps/1999-08/msg00089.html (7,240 bytes)
3. [AMPS] Pretty wild tubes C7164???? (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Fri, 06 Aug 1999 15:45:53 -0400; I was visiting a shop in the area that has been around for many years and the owner pulled out some interesting old tubes that he had and had no idea what the were or were for. An RCA C7164??? Don't; /archives//html/Amps/1999-08/msg00139.html (7,070 bytes)
4. [AMPS] AL-811H A good budget HF amp? (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Mon, 09 Aug 1999 11:35:52 -0400; Charles, I had absolutely no problem with one. Used it for approximately one year and it was always "good to go". VERY easy tune, very stable...Good beginner amp. Next I had an AL-572 and now am usin; /archives//html/Amps/1999-08/msg00172.html (7,957 bytes)
5. [AMPS] sb-200 troubles (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Tue, 10 Aug 1999 18:02:06 -0400; I have been trying to convert the sb-200 to six. Problems: 1.) Safety RF choke from output of tank circuit has blown twice(could this be due to the parasitics???) 2.) Heath manual has resistance chec; /archives//html/Amps/1999-08/msg00187.html (7,110 bytes)
6. [AMPS] Safety RF choke (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Wed, 11 Aug 1999 20:37:57 -0400; While all you experts are discussing the finer points regarding this component I have a question....(SB-200 on 50 mhz) I would like to make a new RF safety choke. Does abt 3 feet (roughly 1/4 wave on; /archives//html/Amps/1999-08/msg00220.html (7,612 bytes)
7. [AMPS] Plate blocking cap values?? (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Sat, 14 Aug 1999 11:34:03 -0400; The SB-200 has a 1000uuf/5kv blocking cap that I would like to replace. What values are tolerable to replace this? I know voltage must be approx., but what abt the capacitance?? Will be going to hamf; /archives//html/Amps/1999-08/msg00260.html (7,021 bytes)
8. [AMPS] Input Match (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Mon, 16 Aug 1999 13:18:40 -0400; For the life of me I cannot attain an input match on this G-D D$%&^$ sb-200 at 6 meters. I have tried what I think is everything. Pi, L types of networks. Wound various coils, tried diff cap. values.; /archives//html/Amps/1999-08/msg00273.html (7,339 bytes)
9. SV: [AMPS] KM1H (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Wed, 25 Aug 1999 13:02:37 -0400; Harald, Why do you consider this unfair to Carl? I'm sure gueugenots' intention was to see if any feedback may help him with this problem...that's what were here for, aren't we? Re: trying to solve p; /archives//html/Amps/1999-08/msg00306.html (7,683 bytes)
10. [AMPS] sb-200 help (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Thu, 22 Jul 1999 09:00:02 -0400; I am converting an sb-200 for six only. All band switching was removed, and only the 10 meter input coil was retained as well as a few turns of the ten meter output coil. Rotor and stator plates have; /archives//html/Amps/1999-07/msg00404.html (7,702 bytes)
11. [AMPS] 572-B Input impedance?? (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Fri, 23 Jul 1999 11:54:59 -0400; I need the approximate input impedance for a pair of 572-B's?? I am working on the input matching on an SB-200 to six meters. Abt 60ohms?? Still have parasitc oscillation problem and am suspicious ab; /archives//html/Amps/1999-07/msg00422.html (7,903 bytes)
12. [AMPS] re:572B parasitcs (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Fri, 23 Jul 1999 12:01:52 -0400; Minor correction to my previous post, "dipmeter shows resonance at 52MEGS, not ohms! " TU, Phil W2GE -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrati; /archives//html/Amps/1999-07/msg00423.html (6,477 bytes)
13. [AMPS] 572-B Input impedance?? (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Fri, 23 Jul 1999 16:27:24 -0400; TU Rich! I am also thinking about trying neutralization on the amp, Maybe using a piece of solid copper from a piece of house romex wire (abt 14 or 12 gauge I guess?) and running it parallel to one o; /archives//html/Amps/1999-07/msg00426.html (9,219 bytes)
14. [AMPS] replacement for 572B's (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Tue, 27 Jul 1999 13:16:45 -0400; As many of you are aware I have been attempting to convert an SB-200 to six meters and I haven't given up. I am waiting for some conversion data from K1RAK, and hope to be successful!! (Power of posi; /archives//html/Amps/1999-07/msg00538.html (7,207 bytes)
15. [AMPS] Tube question (score: 1): Author: drpal@waterw.com (Phil Levin); Date: Thu, 29 Jul 1999 13:14:26 -0400; Needless to say, while working on this SB-200 to six conversion. I was originally using the new set of matched Svetlana 572B's (from D&C Elec., BTW, gud deal..only $102.00 matched) one of the tubes w; /archives//html/Amps/1999-07/msg00623.html (7,647 bytes)

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