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1. [Amps] LP filter effects (score: 1): Author: smlx@earthlink.net (Steve Lawrence); Date: Fri, 15 Nov 2002 23:19:38 -0800; I have an old Drake 1KW LPF in line running 1500w output from an Alpha 87A to a TH7DX. It's worked fine for several years. I've pulled the LPF out of the line. At 28000 with 1500W out, the reflected; /archives//html/Amps/2002-11/msg00267.html (7,495 bytes)
2. [Amps] LPF Filter Effects - Summary (score: 1): Author: smlx@earthlink.net (Steve Lawrence); Date: Sat, 16 Nov 2002 14:46:11 -0800; The drop from 200 (with LPF) to 100 watts reflected (w/o) at the bottom of 10m into my TH7 was as measured on the Alpha 87A LED meter. When fed into a dummy load with a Bird 43 after the LPF, the ref; /archives//html/Amps/2002-11/msg00279.html (7,670 bytes)
3. [AMPS] FS - Vacuum Caps (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Sat, 2 Sep 2000 15:42:52 -0700; I have the following vacuum capacitors for sale: Jennings glass U-250 - Almost 12" long and 4 1/2 " diameter at widest point of the glass. Measures 25 to 265 pf. Was hi-potted at 10KV when I got it.; /archives//html/Amps/2000-09/msg00064.html (6,966 bytes)
4. [AMPS] Alpha 87A (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Wed, 13 Sep 2000 19:53:45 -0700; I've had a new Alpha 87A for about three months now. I looked over all the competition carefully. After hearing of the impending closing of Alpha as we've come to know it, I can honestly say that I f; /archives//html/Amps/2000-09/msg00677.html (6,970 bytes)
5. [AMPS] Wanted: Vacuum Variables (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Fri, 23 Jun 2000 18:49:46 -0700; I'm looking for 500 and 750 pf glass vacuum variables at 10KV or greater. 1000pf also works. Must have mounting flange and puller. What have you + price? 73, Steve WB6RSE -- FAQ on WWW: http://www.co; /archives//html/Amps/2000-06/msg00356.html (6,568 bytes)
6. [AMPS] Vacuum Variable Caps (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Thu, 29 Jun 2000 19:22:33 -0700; I'm still looking for vacuum variable caps. 500 and 750 or 1000 pf at 7.5 to 10 kv or greater with mounting flange and puller. Some of you must have some you know you'll never use. What say? Price? 7; /archives//html/Amps/2000-06/msg00502.html (6,534 bytes)
7. [AMPS] ACOM and Alpha (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Sat, 11 Mar 2000 11:50:48 -0800; Is ACOM the same Bulgarian company that Alpha severed its association with over the foreign construction of the 91ß ? 73, Steve WB6RSE -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Subm; /archives//html/Amps/2000-03/msg00576.html (6,733 bytes)
8. [AMPS] Loss in doorknob caps? (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Sun, 20 Feb 2000 20:48:54 -0800; I'm shunt feeding my tower for the low bands. When replacing air variables caps with fixed doorknobs, the reflected power is much greater. Any thoughts on the losses in doorknob caps vs frequency? Tk; /archives//html/Amps/2000-02/msg00404.html (7,185 bytes)
9. [AMPS] QRO, Yaesu or Alpha (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Sun, 27 Feb 2000 11:56:41 -0800; Opinions, experience on the trade offs between the QRO 2000, Yaesu Quadra and the Alpha 87A price not withstanding. If only the Alpha's were instant on.... Thanks & 73, Steve WB6RSE -- FAQ on WWW: ht; /archives//html/Amps/2000-02/msg00612.html (6,668 bytes)
10. [AMPS] Need Band Switch (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Sun, 16 Jan 2000 10:05:26 -0800; I need a 3 pole 3 position ceramic rotary switch with large contacts suitable for handling a KW. Something like a heavy duty plate circuit band switch. Multi section and other than 30 degree index is; /archives//html/Amps/2000-01/msg00360.html (6,835 bytes)
11. [AMPS] Doorknob Caps (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Fri, 31 Dec 1999 11:51:17 -0800; I'm looking for transmitting type doorknob caps, small values through several hundred pf for use in shunt feeding my tower. What's in your junk box? Tks & 73, Steve WB6RSE -- FAQ on WWW: http://www.c; /archives//html/Amps/1999-12/msg00437.html (6,607 bytes)
12. [AMPS] Yaesu Quadra (score: 1): Author: smlx@earthlink.net (Nancy & Steve Lawrence); Date: Sun, 17 Oct 1999 20:34:52 -0700; Anybody using the Yaesu Quadra amp? When "off" how does the antenna switching work? How's the QSK? General comments / impressions? Tks & 73, Steve WB6RSE -- FAQ on WWW: http://www.contesting.com/amps; /archives//html/Amps/1999-10/msg00528.html (6,618 bytes)
13. [AMPS] 572B Selection (score: 1): Author: smlx@earthlink.net (Steve Lawrence); Date: Sun, 18 Oct 1998 17:00:56 -0800; My workhorse SB200 has less P.O. on the higher bands than when the tubes were new. The tubes are Centron. RFParts lists: Each Matched Pair Svetlana $55 $120 Taylor $40 $ 90 Centron $70 $150 I've neve; /archives//html/Amps/1998-10/msg00273.html (6,936 bytes)
14. [AMPS] SB 200 on 160 (score: 1): Author: smlx@earthlink.net (Steve Lawrence); Date: Fri, 25 Sep 1998 19:07:52 -0800; Doug DeMaw had an article on adapting the SB 200 for 160m in Sept. 1979 QST. I utilized the input circuit only per the article to allow operation on all bands 80 through 10 including the WARC bands.; /archives//html/Amps/1998-09/msg00269.html (7,954 bytes)
15. [AMPS] SB 200 on 160 (score: 1): Author: smlx@earthlink.net (Steve Lawrence); Date: Fri, 25 Sep 1998 21:22:15 -0800; Lane - You are correct. The plate choke must be changed for 160 operation per the article. But the input circuit can be used as I described and has been FB for 18+ years.I meant that the original SB; /archives//html/Amps/1998-09/msg00273.html (8,127 bytes)
16. [Amps] FS Heathkit SB 200 (score: 1): Author: Steve Lawrence <smlx@earthlink.net>; Date: Wed, 18 Feb 2004 11:12:49 -0800; I have an SB200 for sale. Here's the listing on the ARRL website: Heathkit SB200. Includes no holes mod for the WARC bands; Harbach PS board & inrush current protection; keying line modified to -13V;; /archives//html/Amps/2004-02/msg00170.html (7,034 bytes)
17. [Amps] Alpha 87A and Mac (score: 1): Author: Steve Lawrence <SMLX@earthlink.net>; Date: Mon, 21 Mar 2005 10:01:22 -0800; Anyone use the native Terminal program in Mac OS 10.3.X to talk to the 87A serial port? Please reply off line. Thanks & 73, Steve WB6RSE _______________________________________________ Amps mailing l; /archives//html/Amps/2005-03/msg00465.html (6,608 bytes)
18. [Amps] FS SB200 (score: 1): Author: Steve Lawrence <SMLX@earthlink.net>; Date: Mon, 21 Mar 2005 10:31:44 -0800; For sale: Heathkit SB200 WARC compatible; Harbach filter caps and inrush circuit; positive key line mod; original manual. Prefer pick up in West Los Angeles. Make offer. 73, Steve WB6RSE ____________; /archives//html/Amps/2005-03/msg00468.html (6,181 bytes)

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