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Total 160 documents matching your query.

121. [Amps] SB-220 input coil assy (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Tue, 22 Jul 2014 20:46:22 -0500
Anybody have one for sale? Looking for the switch wafer with all five coils and the SM caps--per original, not tweaked per some voo doo science recommendation where I end up rebuilding it. I could do
/archives//html/Amps/2014-07/msg00099.html (6,442 bytes)

122. [Amps] GS-23B (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Thu, 14 Aug 2014 20:18:57 -0500
The GS-23B tetrode has anyone used one of these in a linear? Comments? Paul K0UYA _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mai
/archives//html/Amps/2014-08/msg00041.html (6,239 bytes)

123. [Amps] WTB Henry 2K (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Mon, 24 Nov 2014 17:52:05 -0600
I am looking for a Henry 2K to purchase Any condition considered For restoration project Will pick up. Midwest preferred Thank-you for your consideration Paul K0UYA __________________________________
/archives//html/Amps/2014-11/msg00042.html (6,288 bytes)

124. Re: [Amps] Vendor For Transformer Rewind (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Sat, 24 Jan 2015 09:06:21 -0600
Martin My vote goes hands down to the folks at Heyboer Paul K0UYA A while back I had picked up a Henry 3002A amplifier with a shorted transformer. I am interested in locating a vendor to re-wind the
/archives//html/Amps/2015-01/msg00243.html (8,039 bytes)

125. [Amps] SB-230 (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Sun, 1 Feb 2015 16:39:44 -0600
I am looking for a SB-230 basket case any condition for a project The transformer should be good Beyond that I am negotiable Paul K0UYA _______________________________________________ Amps mailing li
/archives//html/Amps/2015-02/msg00000.html (5,771 bytes)

126. Re: [Amps] I'm not kidding: TL922 (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Wed, 4 Feb 2015 09:17:42 -0600
Or RFID chip implanted? Paul K0UYA Does the dog have an invisible fence collar on? 1. Get a child to listen for it. They have better hearing that we do. 2. Record it with a mic into your pc and with
/archives//html/Amps/2015-02/msg00052.html (10,210 bytes)

127. [Amps] Ameritron availability (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Wed, 25 Feb 2015 10:54:16 -0600
A good friend ordered an ALS 1300 right after New Years (2015) and the delivery was listed as first week February. When that date passed he was advised it would be March, then later upgraded to April
/archives//html/Amps/2015-02/msg00131.html (6,729 bytes)

128. [Amps] Ameritron on order (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Wed, 25 Feb 2015 12:06:54 -0600
The ALS 1300 was ordered from DX Engineering on one special price weekend they had. They may show them as stock but obviously dont have them or they would ship him one Guess they oversold the manufac
/archives//html/Amps/2015-02/msg00135.html (6,629 bytes)

129. [Amps] LK500? (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Thu, 14 May 2015 17:11:35 -0500
Does anyone have a specification for the 10m input network on this? Coils, Trimmers? Is any soft start available for amp? Paul K0UYA _______________________________________________ Amps mailing list
/archives//html/Amps/2015-05/msg00112.html (6,245 bytes)

130. [Amps] LK500ZB (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Thu, 4 Jun 2015 20:55:06 -0500
Is it typical for the output to drop from 750w on 80, 40, 20m to 650w on 15m and 550w on 10m? That is with about 50w of drive. The input swr is 1.1 to 1. Grid current remains about 150ma or a little
/archives//html/Amps/2015-06/msg00002.html (6,350 bytes)

131. [Amps] SWAN MK II (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Sun, 5 Jul 2015 21:24:10 -0500
I have obtained a MK II linear which I describe as late SN 29722 This MK II is unlike any of the free download amplifier power supplies schematics I have found and wonder if later correct manual migh
/archives//html/Amps/2015-07/msg00013.html (6,529 bytes)

132. [Amps] SWAN manual found (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Mon, 6 Jul 2015 14:37:36 -0500
Pleased to report I found the later SWAN MK II manual on mods.dk This is a quality scan, very legible when printed, straight pages, no scribbles or marginal comments. Best of all it is the version fo
/archives//html/Amps/2015-07/msg00015.html (6,488 bytes)

133. [Amps] AMPS switch (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Mon, 13 Jul 2015 20:06:58 -0500
Are replacement wafers for the heavy bandswitch used in AMPS 500ZB available anywhere? Not the Heath 220 sized switch--much bigger Thanks Paul K0UYA _______________________________________________ Am
/archives//html/Amps/2015-07/msg00041.html (6,253 bytes)

134. [Amps] Hsu (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Fri, 17 Jul 2015 16:36:57 -0500
Does anyone have contact information for Hsu? He sometimes has power rf components for sale. Paul K0UYA _______________________________________________ Amps mailing list Amps@contesting.com http://li
/archives//html/Amps/2015-07/msg00051.html (6,173 bytes)

135. [Amps] braid vs bus wire (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Sun, 19 Jul 2015 22:19:13 -0500
Is there any reason the braid from RG 58 would not work as well as #14 solid tinned wire for connection between the pi net coil and bandswitch at 1kw level and frequencies 160 thru 10m I realize stra
/archives//html/Amps/2015-07/msg00063.html (7,023 bytes)

136. [Amps] vacuum relay (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Tue, 8 Sep 2015 21:13:31 -0500
Anyone have a suggestion where to find a reasonable cost DPDT vacuum relay with a 12v dc coil? 2kw hf capable Want to replace the ker chunk antenna relay in a vintage amp. Paul K0UYA ________________
/archives//html/Amps/2015-09/msg00027.html (6,814 bytes)

137. Re: [Amps] Control transformers (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Mon, 11 Apr 2016 14:20:49 -0500
A very good approximation of transformer current is that the transformer current will be three times the dc load current for full wave doubler. Exactly how much more or less depends on the capacitor
/archives//html/Amps/2016-04/msg00024.html (11,233 bytes)

138. Re: [Amps] Harbach capacitors for SB220 (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Tue, 26 Apr 2016 12:03:44 -0500
Dick I can answer that one! The more expensive one is Jeff's original with the screw terminal caps and they are close to the original HK capacitance value. Also VERY expensive caps not easily obtaine
/archives//html/Amps/2016-04/msg00045.html (8,840 bytes)

139. Re: [Amps] SCR to adjust 240v to 200v (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Fri, 19 Aug 2016 09:30:23 -0500
SCR control of an inductive load is not so cut and dried simple as some would like to think. The gates of SCR's need to be pulse fired for reliable phase control. Commercial units have pulse train bu
/archives//html/Amps/2016-08/msg00041.html (11,826 bytes)

140. Re: [Amps] SCR to adjust 240v to 200v (score: 1)
Author: "Paul Kraemer" <elespe@lisco.com>
Date: Sun, 21 Aug 2016 11:20:28 -0500
We were precisely phase controlling the firing of large phase control (made by Semikron) 300 amp 1600v SCR's for full regenerative control of 50hp 3 phase motors in lifting / lowering applications. T
/archives//html/Amps/2016-08/msg00062.html (11,049 bytes)

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