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1. Re: [Amps] L7 Question (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Tue, 26 Apr 2005 11:25:02 -0400; Hello Fernando: Of course your amp has instant heating triodes, which only require a few seconds to come up to temperature. If your amp does not have inrush protection, it is a good idea to turn it o; /archives//html/Amps/2005-04/msg00555.html (8,086 bytes)
2. Re: [Amps] New Command Technologies Amp (score: 1): Author: cherokeehillfarm@earthlink.net; Date: Wed, 27 Apr 2005 18:16:56 -0400 (GMT-04:00); The new magnum will be an FCC approved version of his earlier 2500HP, which featured the 3CPX800A7, two triodes, and a 3,5 KV power supply. This amp basically has the power supply from the 2500E, and; /archives//html/Amps/2005-04/msg00583.html (9,228 bytes)
3. Re: [Amps] New Command Technologies Amp (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sat, 30 Apr 2005 01:06:52 -0400; Perhaps these amplifier manufacturers are just trying to sell tubes, or maybe they haven't said what they really mean: There are several reasons why Lunar-Link Systems sells and recommends the 3CPX80; /archives//html/Amps/2005-04/msg00626.html (8,828 bytes)
4. Re: [Amps] SB220 input alignment (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Mon, 02 May 2005 11:06:33 -0400; Hello Bill: I believe Heath prealigned those coils, and they were just installed in the SB 200 and SB 220. I am traveling today, and will check tonight. You can place an SWR bridge in the amp input l; /archives//html/Amps/2005-05/msg00003.html (9,417 bytes)
5. [Amps] FS: Three 3CX800A7, CPI Eimac (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Fri, 20 May 2005 21:46:44 -0400; I have surplus to my needs, three triodes. They produce full legal output in my amplifier, and compare well with a new set of tubes. If you have some interest in the triodes, please contact me off li; /archives//html/Amps/2005-05/msg00232.html (7,380 bytes)
6. Re: [Amps] RE : copper or silver in tank circuit? (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Fri, 17 Jun 2005 14:42:17 -0400; Hello Amp Fans: I have been following these discussions, and thought I might wade in finally, as a manufacturer of both silver and gold plated conductors. Silver plated conductors, whether used as wi; /archives//html/Amps/2005-06/msg00135.html (15,948 bytes)
7. Re: [Amps] Kilovac HC-1 vacuum relay source (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Thu, 23 Jun 2005 09:38:58 -0400; Both the Kilovac, and Jennings will easily handle 1.5 KW, up to 30 MHZ. They will easily handle 3 KW at 14 MHZ. If you want new relays, at lower prices, you can look at GIGAVAC. They are a spin off c; /archives//html/Amps/2005-06/msg00195.html (10,037 bytes)
8. Re: [Amps] alpha 78 (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sat, 02 Jul 2005 12:15:36 -0400; Hello Amp Fans: I agree, I would bring the amp up slowly, watching the rise in high voltage, that it is increasing proportionately with increasing line voltage. Keep you eyes and nose close to the am; /archives//html/Amps/2005-07/msg00007.html (9,530 bytes)
9. Re: [Amps] Filter Cap for Alpha PA-77?? (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Mon, 11 Jul 2005 23:31:27 -0400; Hello Rich: CDCF008000 CAP, OIL-DCF 35 MFD @ 5000 VDC HIGHER CAPACITY & VOLTAGE ALPHA 77 CAP SAME SIZE AS ORIGINAL ALPHA 77 CAPACITOR BETTER VOLTAGE REGULATION UNDER LOAD !!! H = 7.000 W = 6.000 D =; /archives//html/Amps/2005-07/msg00104.html (7,397 bytes)
10. Re: [Amps] RF Parts OEM 3-500ZG's (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Mon, 08 Aug 2005 08:58:36 -0400; Hello Amp Fans: I had purchased new tubes years ago from Pride, which were manufactured in China, and marked PRC, People's Republic of China. I used them in an SB 220 for many years, after making a f; /archives//html/Amps/2005-08/msg00285.html (10,125 bytes)
11. Re: [Amps] RF Parts OEM 3-500ZG's (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Mon, 08 Aug 2005 12:05:15 -0400; Hi Louie: Yes, I agree with you. They apply some standard bias voltage, and read the plate current at idle. They then select the same idling current pairs for shipment as matched. Good to hear from y; /archives//html/Amps/2005-08/msg00295.html (9,311 bytes)
12. Re: [Amps] SB-220 diode failure (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Tue, 09 Aug 2005 13:37:11 -0400; Hi John: As I recall, with zero bias voltage, that is about what the two tubes would idle at, with a blown zener diode. I would replace the zener with a string of decent diodes, to get the voltage su; /archives//html/Amps/2005-08/msg00346.html (9,718 bytes)
13. Re: [Amps] caps SB200 (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 14 Aug 2005 16:12:41 -0400; Hi Amp Fans: Try RF parts, I believe the have the exact replacement item for the SB 200. If you get stuck, I may have a couple of pulls on hand. Regards, Mike Schatzberg WB2AJI -- Original Message --; /archives//html/Amps/2005-08/msg00498.html (7,980 bytes)
14. Re: [Amps] Silver plating tank hardware (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 17 Aug 2005 01:07:29 -0400; Hello Angelo: Actually, there is not an oxidative process causing the discoloration. Silver plating does not oxide without exposure to temperatures well above 200 degrees centigrade. That is one of t; /archives//html/Amps/2005-08/msg00557.html (11,202 bytes)
15. Re: [Amps] SWR Foldback driving a TL922 (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 18 Sep 2005 13:33:22 -0400; If your jumper between the rig and the amp is just a foot or two long, add a longer jumper, perhaps 15 to 20 feet of RG 8, and retune the amplifier input coils once again. See if you do not find that; /archives//html/Amps/2005-09/msg00214.html (8,835 bytes)
16. Re: [Amps] commander hf2500hp (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 28 Sep 2005 22:34:15 -0400; Hello Joe: I replaced the open frame t/r relay in a 2500E, with Gigavac Relays, GH-1, the equivalent to Kilovac HC-1. I found the Chinese relays to work well, and to be equal in performance to the HC; /archives//html/Amps/2005-09/msg00364.html (9,077 bytes)
17. Re: [Amps] Ameritron AL-1500 Problem (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 05 Oct 2005 10:24:37 -0400; Jose: Check the cable between the transceiver and the amp, or just replace it. If this does not help, find the T/R relay in the amp, and clean the contacts. The relay contacts may be quite poor from; /archives//html/Amps/2005-10/msg00131.html (12,465 bytes)
18. Re: [Amps] Ameritron AL-1500 Problem (Mike Schatzberg) (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 05 Oct 2005 14:17:01 -0400; Wilson, your point is well taken, it could be you are right and the final is at fault. But before investigating such a significant and expensive problem as an intermittently open or shorted 8877, I w; /archives//html/Amps/2005-10/msg00140.html (8,635 bytes)
19. Re: [Amps] Ameritron AL-1500 Problem (Mike Schatzberg) (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 05 Oct 2005 17:46:08 -0400; That is a kindness I'm sure Jose will appreciate Keith. I would still burnish the contacts and check the mechanical alignment on the open frame relay before changing it out for the twin relay update,; /archives//html/Amps/2005-10/msg00149.html (11,606 bytes)
20. Re: [Amps] TT Centuruion oscillation (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sat, 08 Oct 2005 18:03:52 -0400; Hello Henry: If you remove the coax from the Orion, while it is oscillating, does the oscillation stop? Are you using the tuner, if yours is so equipped, in the Orion when the unit oscillates? If you; /archives//html/Amps/2005-10/msg00188.html (10,125 bytes)

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