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21. Re: [Amps] 2 x 8877 (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Wed, 03 Mar 2004 09:51:49 -0500; But what about at 100 mHz and 200 mHz? I worry that a) there is no filtering of harmonic energy through the windows (no pi network), and that the inverse square law is significant when the antenna is; /archives//html/Amps/2004-03/msg00031.html (10,210 bytes)
22. Re: [Amps] 2 x 8877 (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Wed, 03 Mar 2004 12:17:38 -0500; As regards the source of this energy, I'd like to solicit the thoughts of others (including yourself). I'm not sure how much harmonic energy (ala Fourier) is present in the waveforms appearing at the; /archives//html/Amps/2004-03/msg00034.html (12,335 bytes)
23. Re: [Amps] Voodoo death rays from amplifier windows (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Fri, 05 Mar 2004 11:04:36 -0500; Very good. For my edification, how does one calculate the circulating harmonic current? Also, the c in dBc refers to? (and how does this compare to voodoo death rays from planet 9) Thanks much Ed --; /archives//html/Amps/2004-03/msg00057.html (8,391 bytes)
24. [Amps] AL-1200 Intermittent HV Short (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Sat, 06 Mar 2004 06:48:24 -0500; Three times in three weeks, when I turn the AL-1200 on, there is a flash and a bang from the RF compartment. This happens immediately at power up. Once it blew the diode that connects the b- to chass; /archives//html/Amps/2004-03/msg00061.html (7,948 bytes)
25. Re: [Amps] 3CX1500D7 (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Sat, 20 Mar 2004 06:44:06 -0500; I wonder what the market is like for this device. Would Ham OEMs find this an attractive component when the majority have turned to 4x800? I realize they could eliminate the screen ps and various pro; /archives//html/Amps/2004-03/msg00216.html (8,256 bytes)
26. Re: [Amps] 3-1000z output? (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Fri, 23 Apr 2004 07:09:20 -0400; The Amperex 3-1000z/8164 datasheet shows class C operation at 6000 v @ 700ma yielding 3200 watts out. At 4500 v @ 700 ms, class C operation yields 2250 watts out. However for class B rf linear, they; /archives//html/Amps/2004-04/msg00162.html (9,056 bytes)
27. [Amps] F.C.C. proposes eliminating some rules regarding amateuramplifiers (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Sun, 25 Apr 2004 15:42:45 -0400; Some recent proposals from FCC (from ARRL webpage re Amateur Restructuring) The FCC also has proposed essentially eliminating its rules prohibiting manufacture or marketing of Amateur Radio Service p; /archives//html/Amps/2004-04/msg00202.html (7,970 bytes)
28. Re: [Amps] AL-1200 Pop (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Tue, 06 Jul 2004 22:19:50 -0400; It could be lots of things. But I recently had this problem and it turned out to be the tube. Symptoms: Pop in standby, at power up. Visible flash, apparently coming from RF compartment Occationally,; /archives//html/Amps/2004-07/msg00026.html (8,795 bytes)
29. Re: [Amps] AL-1200 Pop (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Wed, 07 Jul 2004 19:52:47 -0400; Neither did I, which I why I spent a month screwing around with everything else imaginable. Finally decided to replace the tube, problem went away. Put the old tube back, problem came back. Incidenta; /archives//html/Amps/2004-07/msg00033.html (13,018 bytes)
30. Re: [Amps] RF Feedback Problem (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Mon, 26 Jul 2004 18:56:29 -0400; You didn't mention what the symptoms of the rf feedback were, but assuming it is rf feedback you're experiencing here's what I've found with mine. The GAP Titan is constructed in such a way that a co; /archives//html/Amps/2004-07/msg00206.html (9,593 bytes)
31. [Amps] Suggestions to quiet a blower (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Sun, 15 Aug 2004 10:46:27 -0400; A perennial question.. I'm considering trying to quite down the blower in my Al-1200. I am using the stock EBM G2S085-AA which is a single inlet centrifugal blower which I run at top speed since it i; /archives//html/Amps/2004-08/msg00138.html (7,537 bytes)
32. Re: [Amps] Need Diagnostic help (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Tue, 17 Aug 2004 07:04:47 -0400; At the risk of stating the obvious, if the 240 VAC circuit is defective and possibly arcing, this is a fire hazard and you'd probably be best off not doing further diagnostic work until an electricia; /archives//html/Amps/2004-08/msg00170.html (9,511 bytes)
33. Re: [Amps] Centurion cooling improvement ideas for AM service (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Wed, 25 Aug 2004 07:51:06 -0400; I contacted the manufacturer on a related topic some time back. Their official response (contained in the manual) is for keydown operation, 650W max, 50% duty cycle, 10 minutes max transmission time; /archives//html/Amps/2004-08/msg00288.html (11,821 bytes)
34. Re: [Amps] Svetlana 572B and FL-2100Z (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Sat, 28 Aug 2004 10:13:25 -0400; THe Svetlana 572b had difficult holding off the high voltage and would flashover. There were reported elsewhere in this mailing list. Ameritron, reportedly, had difficulty getting the Svetlana 572s t; /archives//html/Amps/2004-08/msg00424.html (9,497 bytes)
35. Re: [Amps] Tentec TITAN III vs ALPHA99 (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Mon, 25 Oct 2004 18:34:27 -0400; The Titan III is rated at 1000w for up to 10 minutes, not continuous. See the owner's manual on their web page. I assume). The TitanIII data says it's only good for 1000W continuous duty..... Probabl; /archives//html/Amps/2004-10/msg00418.html (9,367 bytes)
36. Re: [Amps] Vi et armis (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Tue, 09 Nov 2004 21:08:21 -0500; The two phrases which I've found most often bring the knowing nods of profound appreciation from former Latin students are: "Reg penna dept agr." and "Lorem ipsum dolor sit amet ... " Many will offer; /archives//html/Amps/2004-11/msg00129.html (8,680 bytes)
37. Re: [Amps] Power Transformer (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Sun, 26 Dec 2004 09:23:58 -0500; Lots of factual errors here folks. It's important to distinguish between personal opinion and fact on matters like this, because some readers are likely to take the opinions as factual. First, there; /archives//html/Amps/2004-12/msg00330.html (15,781 bytes)
38. [Amps] WTB SK-506 (4-1000a Chimney) (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Sat, 05 Feb 2005 10:20:44 -0500; Anybody have an SK-506 (4-1000a) chimney to sell? I see six for sale on ebay as a package, but I just want one. Thanks Ed N1TS _______________________________________________ Amps mailing list Amps@c; /archives//html/Amps/2005-02/msg00149.html (6,241 bytes)
39. Re: [Amps] OT: RF Parts still in business? (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Wed, 02 Mar 2005 18:08:31 -0500; I've place several orders in the past few weeks and received them all on time with no problems. In the past, I've done business with RF parts a number of times, and never had a problem. It sounds lik; /archives//html/Amps/2005-03/msg00021.html (9,338 bytes)
40. Re: [Amps] audio black magic TSPA (score: 1): Author: Ed Briggs <edbriggs@optonline.net>; Date: Mon, 08 Aug 2005 16:14:15 -0400; Not quite right. The newer processors have the ability to do both IEEE 80 bit (ala 8087) and newer instructions (e.g. SIMD extention 2). The new 64 bit processors have new floating point capabilitie; /archives//html/Amps/2005-08/msg00559.html (14,376 bytes)

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