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1. [Amps] Heathkit SB-221 input network help, the saga continues.... (score: 1): Author: W2CS@bellsouth.net (Gary Ferdinand W2CS); Date: Sat, 2 Nov 2002 08:48:20 -0500; Mike, I'm just tuning into this thread now, so if this has been covered, sorry. The inductance computation of a coil with a slug in the middle of it is quite different from one that is air-wound. Did; /archives//html/Amps/2002-11/msg00008.html (15,153 bytes)
2. [Amps] SB220 T/R relay substitution (score: 1): Author: W2CS@bellsouth.net (Gary Ferdinand W2CS); Date: Thu, 14 Nov 2002 16:35:17 -0500; Tony, Do the QSK mod anyway. Rich Measures' one is excellent. You don't have to run QSK when you use it...Just run in VOX mode the way you normally do. But, I guarantee the relays will be quiet! Gary; /archives//html/Amps/2002-11/msg00228.html (9,183 bytes)
3. [Amps] Bias Zener Diodes In Parallel ? (score: 1): Author: W2CS@bellsouth.net (Gary Ferdinand W2CS); Date: Tue, 16 Jul 2002 20:23:35 -0400; Why not use a string of normal diodes in series? They go in OPPOSITE to how the zener connects. Figure about 0.7-0.8V per diode, string what you need in SERIES to generate the bias voltage you need.; /archives//html/Amps/2002-07/msg00234.html (11,882 bytes)
4. [Amps] Needed: AmpSupply LK500ZC Schematic (score: 1): Author: W2CS@bellsouth.net (Gary Ferdinand W2CS); Date: Fri, 14 Jun 2002 15:05:35 -0400; I'm trying to track down an LK500ZC schematic. This is the Amp Supply 3-500Z amplifier withOUT the QSK unit. I am particularly interested in the power supply and cathode/input part of the diagram. If; /archives//html/Amps/2002-06/msg00097.html (6,584 bytes)
5. [Amps] SB-200 Problem (score: 1): Author: W2CS@bellsouth.net (Gary J. Ferdinand); Date: Mon, 4 Mar 2002 21:09:24 -0500; Chuck, Were you feeding power to the amp when it pegged or did you just throw it into transmit position but without the exciter putting any power into it? This sounds like a classic amp-taking-off p; /archives//html/Amps/2002-03/msg00062.html (9,347 bytes)
6. [Amps] SB-200 Problem (score: 1): Author: W2CS@bellsouth.net (Gary J. Ferdinand); Date: Tue, 5 Mar 2002 09:31:59 -0500; Chuck, Frequently an amp will take off like that only with a particular combination of load and setting of plate/load capacitors. That it seems to happen with an arbitrary setting of the caps tells m; /archives//html/Amps/2002-03/msg00081.html (10,169 bytes)

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