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221. [AMPS] Conjugate Matching In Class B and C Amplifiers (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Fri, 11 May 2001 11:52:29 -0500; This is a multi-part message in MIME format. --=_NextPart_000_0025_01C0DA10.DB0147C0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable There is an ongoing "; /archives//html/Amps/2001-05/msg00181.html (11,566 bytes)
222. [AMPS] Conjugate Matching In Class B and C Amplifiers (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Fri, 11 May 2001 21:22:09 -0500; Observations of a common layman..... Bruene and Maxwell both agree that there is no conjugate match from the plate block back toward the tube and plate choke. Bruene maintains that there is no conju; /archives//html/Amps/2001-05/msg00202.html (10,103 bytes)
223. [AMPS] Harris RF111 PS for RF110 amp (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sat, 12 May 2001 10:45:47 -0500; Hi Traian, I have not heard of a RF-111A. The RF-112A uses single phase 60 hz power for everything but the plate and screen supply. This includes the blower inverter...it is 115v single phase also. (; /archives//html/Amps/2001-05/msg00212.html (7,737 bytes)
224. [AMPS] Conjugate Matching In Class B and C Amplifiers (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sat, 12 May 2001 15:33:29 -0500; It is my hope, Paul that the League is/will continue the fine tradition that Communications Quarterly always had. Over the years some really far-out and controversial pieces were printed without much; /archives//html/Amps/2001-05/msg00222.html (9,973 bytes)
225. [AMPS] Conjugate Matching In Class B and C Amplifiers (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sat, 12 May 2001 17:42:09 -0500; ? It seems to me that they need a technical editor with all 44 teeth, who isn't afraid to bite deserving advertisers, i.e. - another George Grammer. So far, there are no "big gun" dealer advertisemen; /archives//html/Amps/2001-05/msg00226.html (9,966 bytes)
226. [AMPS] Conjugate Matching In Class B and C Amplifiers (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sat, 12 May 2001 17:51:30 -0500; ? About 10-yrs. ago, a QST staffer told me that they stopped publishing W. Maxwell's conjugate-matching info because of the discrepancy with linear amplifiers. Now that Mr. Maxwell has clarified exa; /archives//html/Amps/2001-05/msg00227.html (10,227 bytes)
227. [AMPS] Conjugate Matching In Class B and C Amplifiers (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sun, 13 May 2001 11:08:28 -0500; I assume nothing about anyone. The above comment meant that Bruene and Maxwell have forgotten more than most of us will ever know. Both have been wrong in the past on a few subjects. I have been wro; /archives//html/Amps/2001-05/msg00239.html (10,228 bytes)
228. [AMPS] Nichrome wire and tube chimneys! (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Mon, 14 May 2001 10:09:01 -0500; ? Bob: Any opinion about the use of vertical air flow on horizontal cooling fins.? The lip at the top of the Eimac chimney turns a portion of the air 90 degrees to pass horizontally over the fins of; /archives//html/Amps/2001-05/msg00262.html (9,231 bytes)
229. [AMPS] Thar she blows (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Mon, 14 May 2001 16:47:27 -0500; How about 45% under run, Dr. Barry! Too bad most amps on the commercial market today have no such headroom in power or cooling. I have worked on many of the Heath SB series amps. A lot of the tubes; /archives//html/Amps/2001-05/msg00271.html (8,073 bytes)
230. [AMPS] Thar she blows (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Mon, 14 May 2001 18:24:01 -0500; ? The failure of which components, Phil? // Most of the 3-500z failures that I have seen are due to a fil./grid short following a 'big-bang'. I guess over the years I have seen all of the SB-200/220; /archives//html/Amps/2001-05/msg00279.html (8,438 bytes)
231. [AMPS] Conjugate Matching In Class B and C Amplifiers (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 15 May 2001 19:23:48 -0500; Mr. Maxwell's position is that you have a conjugate match, maximum power transfer, AND with efficiencys greater than 50%. Axiom #1: There is a conjugate match whenever all of the availale power from; /archives//html/Amps/2001-05/msg00294.html (10,831 bytes)
232. [AMPS] YC-156 Data required (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 15 May 2001 21:23:52 -0500; Look at the data for the 3CX15000B7. Same specs, except YC-156 has a 5000 watt anode cooler. GL! Phil, K5PC -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administ; /archives//html/Amps/2001-05/msg00297.html (7,221 bytes)
233. [AMPS] filter caps (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Wed, 23 May 2001 08:22:51 -0500; Harbach Electronics. They advertise in the classified section of QST and CQ. They have a web site. -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative re; /archives//html/Amps/2001-05/msg00385.html (7,412 bytes)
234. [AMPS] Sucking instead of Blowing (was - This guy is gotta be kidding!) (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sun, 27 May 2001 18:30:01 -0500; You are just going to have to trust us on this until you see measurements for yourself. The Heath designers did not just get up one morning, place a fan from the parts room in front of a pair of 3-5; /archives//html/Amps/2001-05/msg00467.html (9,529 bytes)
235. [AMPS] PA-77 musings (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Mon, 28 May 2001 05:06:30 -0500; . Okay, then make it 3900/3510 . I found the CC curve sheet for the 8877 on a site somewhere, but have no idea what idling current (thus first-approximation bias voltage) Eimac recommends for a 8877; /archives//html/Amps/2001-05/msg00475.html (7,554 bytes)
236. [AMPS] Conjugate Matching and Efficiency (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 29 May 2001 11:28:42 -0500; Alas...later issues of the Handbook are riddled with errors and theories presented as "gospel." When I came into ham radio in the '50's, the ARRL Handbook was reffered to a "the bible." Not so anymo; /archives//html/Amps/2001-05/msg00495.html (9,832 bytes)
237. [AMPS] Sucking instead of Blowing (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 29 May 2001 19:54:30 -0500; ? Greetings, Chris 1. how did you measure these temperatures? 2. does your amplifier use a split chassis? 3. how tall is the tube? 4. what is the diameter of the fan? Also, 'mo air is sometimes not; /archives//html/Amps/2001-05/msg00503.html (8,027 bytes)
238. [AMPS] 4-1000A Project (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 3 Apr 2001 14:48:42 -0500; I have built and operated several 4X1 amps over the years. On a good day with a good layout and a 100% tube, you can expect 1500 watts key down with 100 watts drive at an Ep of 6000v. The drive powe; /archives//html/Amps/2001-04/msg00025.html (9,298 bytes)
239. [AMPS] Floating Ground (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Wed, 4 Apr 2001 08:28:32 -0500; So that the plate current meter can be placed in the B- line instead of running HV through it. Cutting the tube off during standby eliminates a lot of heat. (((73))) Phil, K5PC -- FAQ on WWW: http://; /archives//html/Amps/2001-04/msg00058.html (7,207 bytes)
240. [AMPS] Matching Input (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Wed, 4 Apr 2001 08:42:59 -0500; Put an attenuator pad between the output of the 813 and the input of the 3-500Z's. (((73))) Phil,K5PC -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative; /archives//html/Amps/2001-04/msg00060.html (7,355 bytes)

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