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1. [Amps] Alpha Amplifier Parts (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Wed, 07 Dec 2005 23:10:59 -0500; Here is my listing of Alpha amplifier parts I have for sale: http://www.isquare.com/personal_pages/alphaparts.htm 73, Bob WØYVA Personal site: http://www.isquare.com/personal_pages/ras-hardwar; /archives//html/Amps/2005-12/msg00088.html (6,385 bytes)
2. Re: [Amps] 4-250a mounting (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sun, 25 Dec 2005 18:38:54 -0500; Peter, According to "Single Sideband" by Eitel-McCullough, 1955, which contains the Eimac spec sheets; for the 4-250A: "Mounting Position: Vertical, base up or down." Elements might "sag" a bit if of; /archives//html/Amps/2005-12/msg00333.html (8,262 bytes)
3. [Amps] Attention - amplifier builders (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Tue, 17 Jan 2006 14:40:18 -0500; I have a nice large 0-4amp 4" panel meter labeled D.C. AMPERES and P. A. PLATE. Overall size is 5-1/4 x 4-1/4. Meter is a model 45T by Plasma-Therm. First offer gets it. Photo here: http://www.isquar; /archives//html/Amps/2006-01/msg00430.html (6,657 bytes)
4. [Amps] HV Oil Filled capacitor (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sun, 12 Mar 2006 12:00:20 -0500; I have a large oil filled capacitor perfect for that BIG amplifier. 53uf/5000v; 3-3/4 x 4-1/2 x 10-1/2 high. Weighs slightly over 10 pounds. $50 plus shipping. 73, Bob WØYVA Personal site: htt; /archives//html/Amps/2006-03/msg00291.html (6,411 bytes)
5. [Amps] HV Oil Cap (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sun, 12 Mar 2006 15:00:15 -0500; The HV oil capacitor has been sold. Wish I had a truck load of 'em. 73, Bob WØYVA Personal site: http://www.isquare.com/personal_pages/ras-hardware.htm ________________________________________; /archives//html/Amps/2006-03/msg00293.html (6,221 bytes)
6. [Amps] Big HV Transformers (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sun, 12 Mar 2006 23:16:21 -0500; I have a couple of large HV transformers available. It would be best to pick up these beasts at Dayton but if you?re willing to pay the shipping I?m happy to ship. 1. Dahl HV transformer: Typical Dah; /archives//html/Amps/2006-03/msg00316.html (6,854 bytes)
7. [Amps] Dayton (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Thu, 20 Apr 2006 23:10:34 -0400; If anyone would like to see a listing of what I am bringing to Dayton please contact me off list. Lots of stuff including an Alpha 77Sx/Dx (factory two tube); NCX-1000; CX-11A; 32V-2; 75A-4 and much; /archives//html/Amps/2006-04/msg00321.html (6,727 bytes)
8. Re: [Amps] Help with HP 428B Clip On Ammeter (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Wed, 03 May 2006 09:59:44 -0400; David, That would be V8, (head drive amp), which is a 12AU7 ("selected by HP"). 73, Bob WØYVA Personal site: http://www.isquare.com/personal_pages/ras-hardware.htm ____________________________; /archives//html/Amps/2006-05/msg00010.html (8,656 bytes)
9. Re: [Amps] 813's (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sat, 27 May 2006 16:12:01 -0400; Carl, Yes, you can. One of the neatest amplifiers every made utilized a single 813 positioned horizontally, - the Central Electronics 600L. Look at my restoration here: http://www.isquare.com/persona; /archives//html/Amps/2006-05/msg00431.html (8,041 bytes)
10. Re: [Amps] I need coil clips (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sun, 03 Sep 2006 09:00:51 -0400; Ken, B&W makes coil clips - not exactly like your photo but could be used ... See here: http://www.bwantennas.com/coils/coilclip.htm 73, Bob WØYVA Personal site: http://www.isquare.com/persona; /archives//html/Amps/2006-09/msg00058.html (7,533 bytes)
11. Re: [Amps] "10 Meter Ban" to be lifted ... (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Thu, 12 Oct 2006 15:20:08 -0400; Jim Exactly right. When I was manufacturing the ARD 230 (microprocessor controlled, auto tune) series of amplifiers we did just that - we simply "locked out" those 11-meter frequencies in software. h; /archives//html/Amps/2006-10/msg00097.html (10,422 bytes)
12. [Amps] 4-1000 amp (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sun, 17 Dec 2006 15:32:04 -0500; Listmates, I would like to communicate with someone who has built an amp utilizing a pair of 4-1000's modulated by a pair of 4-1000's. Thanks and Merry Christmas to all. email: robert@isquare.com 73,; /archives//html/Amps/2006-12/msg00119.html (6,347 bytes)
13. [Amps] Inadequate load current (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Thu, 12 Apr 2007 16:00:22 -0400; Listsmates, I'm working on a Globe King 400 ... conventional push-pull output using a pair of V70D's and link coupling. Design operating current is 300ma and for the life of me I cannot load above 20; /archives//html/Amps/2007-04/msg00098.html (7,347 bytes)
14. [Amps] Modulation Transformer Info (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Tue, 17 Apr 2007 21:01:44 -0400; Listmates, Does anyone have connection and pinout info for the Thordarson T-21M62-A universal (multi-match) modulation transformer? I have plenty of "spec" data but no connection info. I think these; /archives//html/Amps/2007-04/msg00188.html (6,908 bytes)
15. [Amps] SS 872A's (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Mon, 23 Jul 2007 16:05:46 -0400; Greetings, I'm looking for two (four if I can find 'em) solid state replacements for the 872A's. Anyone have any that will part with? Peter Dahl does not have any. BTW, so you know, the ordering port; /archives//html/Amps/2007-07/msg00377.html (6,480 bytes)
16. [Amps] Drake L-4B (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Mon, 30 Jul 2007 09:42:37 -0400; Listmates, I'm selling my L-4B amplifier. If interested please contact me off list. Pickup is possible at the Berryville Hamfest. Photos are here; http://www.isquare.com/ebay/ebay-2/l4b-front.jpg htt; /archives//html/Amps/2007-07/msg00520.html (7,478 bytes)
17. Re: [Amps] Switch (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Mon, 29 Oct 2007 23:01:34 -0400; Dennis, Here's one: http://multi-tech-industries.com/rswitches.html 73, Bob WØYVA Personal site: http://www.isquare.com/personal_pages/ras-hardware.htm ________________________________________; /archives//html/Amps/2007-10/msg00269.html (6,953 bytes)
18. [Amps] 4-400A's wanted (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Tue, 26 Feb 2008 22:16:08 -0500; Does anyone have a pair of Eimac 4-400A's, NOS, that they would like to sell? Please contact me off list. 73, Bob WØYVA Personal site: http://www.isquare.com/personal_pages/ras-hardware.htm robert@is; /archives//html/Amps/2008-02/msg00196.html (6,444 bytes)
19. [Amps] Vacuum Relay (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sat, 30 May 2009 18:04:55 -0400; I have a Jennings RB2A-26N300 (DPDT) vacuum relay for sale. If interested, contact me off list. 73, Bob WØYVA http://www.isquare.com/personal_pages/ras-hardware.htm __________________________________; /archives//html/Amps/2009-05/msg00271.html (6,381 bytes)
20. [Amps] High Power Parts (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Thu, 20 May 2010 19:53:18 -0400; Listmates, I have a couple of RCA BTA-1R1 BC transmitters that are left over from a restoration job. There are lots of parts remaining. Anyone that is close to Great Falls, VA is welcome to visit and; /archives//html/Amps/2010-05/msg00230.html (7,161 bytes)

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