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341. [AMPS] 23cm amplfier (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Fri, 31 Dec 1999 09:37:21 -0800; I found kb2ah's 23 cm amplifier (six 2c39's) at: http://www.kb2ah.com Some really nice pics of his construction details. cheers skipp ________________________________________________________________; /archives//html/Amps/1999-12/msg00425.html (6,932 bytes)
342. [AMPS] correction (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Fri, 31 Dec 1999 10:10:02 -0800; should have read "... control the screen potential." cheers skipp ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE Intern; /archives//html/Amps/1999-12/msg00430.html (7,187 bytes)
343. [AMPS] ultra linear circuit for audio (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Fri, 31 Dec 1999 10:06:36 -0800; Hi Colin, re your audio amp ultra linear comparison. The common "ultra linear" audio circuits I have here, use a "second transformer tap" for the screen grid. That was the common (MacIntosh Tube Amp; /archives//html/Amps/1999-12/msg00431.html (8,416 bytes)
344. Peter Sundberg <sm2cew@telia.com>: Re: [AMPS] daf amplifiercircuit, on air testing... (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Fri, 31 Dec 1999 10:26:48 -0800; Hi Peter, From: Peter Sundberg <sm2cew@telia.com> yes... wrong. I just described what I saw (and heard). There may be various versions of a similar daf circuit. The performance of the daf would obvio; /archives//html/Amps/1999-12/msg00432.html (8,807 bytes)
345. [AMPS] knock a 3-500z short loose..? (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Fri, 31 Dec 1999 10:57:02 -0800; I've got the source of much trouble here in my hand... a 3-500z with a cathode to grid short. Anyone care to suggest a method to possibly open the short. I won't trust the tube in an amplifier again,; /archives//html/Amps/1999-12/msg00433.html (7,691 bytes)
346. [AMPS] HV Line Side Regulator... (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Thu, 4 Nov 1999 22:55:31 -0800; The QST Article was called "A Line Side HV Regulator". Didn't work for me for many reasons, some personal preference... most important was its poor response to the dynamics of SSB operation. Lot's of; /archives//html/Amps/1999-11/msg00185.html (7,728 bytes)
347. [AMPS] Flaky Clipperton L (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Sat, 6 Nov 1999 09:45:32 -0800; A similar problem in one of my 30S-1 amplifiers turned up a poor contact pair on the T/R relay. Cleaning the contacts with a small Q-tip wet with Acetone, after a once over with the proper burnishing; /archives//html/Amps/1999-11/msg00187.html (7,567 bytes)
348. [AMPS] AC Line side regulator.. (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Sat, 6 Nov 1999 09:54:52 -0800; The article was "A line Side Regulator" for HV... Mid to late 80's QST I believe. Not a good idea. One SF Bay Area Old timer became room temperature building the circuit. Lots of extra line noise to; /archives//html/Amps/1999-11/msg00188.html (7,814 bytes)
349. [AMPS] 811a Grid Bias and Resting Plate Current (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Sat, 6 Nov 1999 10:03:50 -0800; Bill, A much better way to deal with your 811a amplifier would be to ground the tube grids with a low inductive straps, have a relay in the filament center tap with a large value resistor >50k in ser; /archives//html/Amps/1999-11/msg00189.html (8,873 bytes)
350. [AMPS] double post... line side regulator. (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Sat, 6 Nov 1999 10:18:22 -0800; Hell there, My amps reply to the Line side regulator topic may have been posted twice. Operator and server error. Sorry about that. cheers skipp The QST Article was called "A Line Side HV Regulator".; /archives//html/Amps/1999-11/msg00190.html (7,165 bytes)
351. [AMPS] typo error... (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Sat, 6 Nov 1999 12:38:11 -0800; re: typo Gremlins invade my brain, fingers and equipment this week. Sorry about the typo in my last post. skipp nospam4me@juno.com ___________________________________________________________________; /archives//html/Amps/1999-11/msg00192.html (6,926 bytes)
352. [AMPS] re: need Excel program (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Sun, 7 Nov 1999 17:49:56 -0800; re: The Excel Program for spreadsheets.. Hello there, I have about 1 or 2 copies left, of the Microsoft Office package, in the original shrink wrap with the original certificate of authenticity. I'll; /archives//html/Amps/1999-11/msg00206.html (7,990 bytes)
353. [AMPS] SB 220 repair (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Mon, 8 Nov 1999 21:58:58 -0800; A friend brought over a Heathkit SB 220 for repair. I thought I'd tell you what I found. I removed the chassis from the case to first find the ALC electrolytic capacitor strewn about the bottom in co; /archives//html/Amps/1999-11/msg00217.html (9,083 bytes)
354. [AMPS] shipping (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Mon, 8 Nov 1999 22:07:21 -0800; Lane, I often ship very large and heavy items across the country. Roadway seems to do a great job for me. cheers skipp From: "Lane Zeitler" <Ku7i@worldnet.att.net> I am looking at purchasing a power; /archives//html/Amps/1999-11/msg00218.html (7,282 bytes)
355. [AMPS] excel info (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Mon, 8 Nov 1999 22:14:06 -0800; Thanks to all of you who Emailed. I have two copies left. To save time, let me say this is the original MS Office 2 CD package and it runs on windows 3.1, 95 and 98. As far as I know, the MS Word doe; /archives//html/Amps/1999-11/msg00219.html (8,044 bytes)
356. [AMPS] mod an Amp Supply la-1000 (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Wed, 10 Nov 1999 21:46:32 -0800; Hi Art, If it's the four sweep tube version, you need to do the mechanical part yourself. The Factory Mod was a 124pf (use 120 or 130 pf) mica cap, a 5 turn toroid of the same type already in the amp; /archives//html/Amps/1999-11/msg00274.html (7,533 bytes)
357. [AMPS] Band switch question (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Wed, 10 Nov 1999 21:37:53 -0800; Vic, It's not a problem in a larger Band switch assembly used here. The shaft is grounded to the chassis. skipp I have a nice Band switch, 2 poles x 8 positions. I believe it came from a Dentron amp;; /archives//html/Amps/1999-11/msg00275.html (7,575 bytes)
358. [AMPS] SB200 using 208VAC ? (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Wed, 10 Nov 1999 21:31:34 -0800; One might suspect the lower filament voltage to be the culprit. The normal SB-220 filament voltage has been known to be just enough to provide full emission at the standard mains voltages. Operation; /archives//html/Amps/1999-11/msg00276.html (8,400 bytes)
359. [AMPS] sb 220 update that was bounced the first time sent in... (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Wed, 10 Nov 1999 21:33:35 -0800; supply, Correct, wrong label and most of the 110 volt supplies measure close to 120 vdc resting. It's interesting that the excessive voltage happens after both tubes have been sitting on for a few m; /archives//html/Amps/1999-11/msg00277.html (9,191 bytes)
360. [AMPS] those crazy french tubes... (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Thu, 11 Nov 1999 21:18:11 -0800; Hans, Do the Amprex tubes you have in your amplifier have the anode that look like a cylinder with bulges vs the "standard" fin/accordian others. Just curious. skipp From: "sm5ki" <sm5ki@algonet.se>; /archives//html/Amps/1999-11/msg00298.html (7,773 bytes)

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