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141. [AMPS] Instant ON.. (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 11:58:33 -0500
What list? Worked on 40 CW with no problems or idiot cops. 4 el at 180' helps a bit. (-: 73 Carl KM1H ___________________________________________________________________ You don't need to buy Interne
/archives//html/Amps/1999-03/msg00496.html (8,960 bytes)

142. [AMPS] CW amplifier tubes (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 17:39:08 -0500
On Fri, 19 Mar 1999 09:51:53 -0800 Rich Measures <measures@vc.net> writes: Think triodes with handles. Carl ___________________________________________________________________ You don't need to buy I
/archives//html/Amps/1999-03/msg00497.html (9,091 bytes)

143. [AMPS] CW amplifier tubes (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 17:37:17 -0500
On Fri, 19 Mar 1999 09:40:50 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: Thats sure a whole lot cheaper than the Henry price. Anyone can buy at the same price from Ameritron. Maximum....than de
/archives//html/Amps/1999-03/msg00498.html (9,063 bytes)

144. [AMPS] Alpha 89 SWR protection (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 10:57:21 -0500
On Sat, 20 Mar 1999 01:12:20 -0500 "Dick Green" <dick.green@valley.net> writes: SNIP Why not parallel another inv V for 75M on the same feed? If you can manage at least a 45 degree angle between them
/archives//html/Amps/1999-03/msg00520.html (8,268 bytes)

145. [AMPS] Re: CW amplifier tubes (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 09:58:48 -0500
On Sat, 20 Mar 1999 12:41:01 +1300 Martin Ellis <jmellis@ihug.co.nz> writes: Good point Martin. The TL-922 runs cool but at the expense of a rather elaborate and complicated series of panels and baff
/archives//html/Amps/1999-03/msg00521.html (8,742 bytes)

146. [AMPS] Follow Up on the SB-220 Follow UP (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 14:43:18 -0500
That is a rather solid indication something is still wrong. All That also Don't seem to Tubes wont do that Tuning on 80M is fairly broad compared Think a bit Walt. What didnt you check? I would start
/archives//html/Amps/1999-03/msg00522.html (10,484 bytes)

147. [AMPS] Re: cheap tubes--good power (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 12:44:22 -0500
They are a nice tube and can easily be retrofitted in to several 3-500Z amps. A bit higher gain which makes them easy to drive. I need his E-Mail adr ??? Yep, and some of the Chinese 3-500 graphites
/archives//html/Amps/1999-03/msg00523.html (9,344 bytes)

148. [AMPS] More on the SB220 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 11:25:25 -0500
AMEN ! On a voltage rating note: I recently had a long chat with K1FO of both amp and antenna fame and found out something interesting. He is using 3CPX800A7's in his 1500W + 70cm and 2M amp products
/archives//html/Amps/1999-03/msg00524.html (11,168 bytes)

149. [AMPS] Big Tetrodes at UHF (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 14:37:55 -0500
On Sat, 20 Mar 1999 21:41:45 +0100 Peter Sundberg <sm2cew@telia.com> writes: Hi Peter, Parasitics at 70cm ? Is it possible that you were experiencing a cavity effect internal to the tube? I believe t
/archives//html/Amps/1999-03/msg00525.html (10,591 bytes)

150. [AMPS] More on the SB220 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 12:04:23 -0500
Correct, but a typical arc in the 220 does not blow apart R-3. In fact the original Heath and the metal film Harbach often show no external sign of failure. So the BANG is not in that part of the amp
/archives//html/Amps/1999-03/msg00526.html (11,986 bytes)

151. [AMPS] More on the SB220 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 21 Mar 1999 10:10:02 -0500
On Fri, 19 Mar 1999 17:02:03 -0700 "Richard W. Ehrhorn" <w4eto@rmii.com> writes: Are you saying that an arc in a vacuum will be loud? If so then I certainly have to revise my thinking ! BTW, I need a
/archives//html/Amps/1999-03/msg00527.html (15,159 bytes)

152. [AMPS] Solid State Relays/soft start (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 25 Mar 1999 13:58:44 -0500
On Sun, 21 Mar 1999 20:18:49 "Phil T. (VE3OZZ)" <phil@vaxxine.com> writes: SNIP Amp Supply used SS time delay relays at the very end of their reign. Worked just fine in the LK-750, 780 and 800 which
/archives//html/Amps/1999-03/msg00616.html (10,876 bytes)

153. [AMPS] PS caps (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 25 Mar 1999 16:16:33 -0500
On Sun, 21 Mar 1999 21:32:48 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: Take a look at what the big boys use, not one -off ham crap. Even MFJ uses the CGS style caps. Does that sorta tell you
/archives//html/Amps/1999-03/msg00617.html (9,864 bytes)

154. [AMPS] Filament choke rod material (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 26 Mar 1999 12:49:00 -0500
On Tue, 23 Mar 1999 14:36:57 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: Absolutely and with no performance degradation at 10M either. The added L with the 33 mix improves the low bands. That i
/archives//html/Amps/1999-03/msg00624.html (8,104 bytes)

155. [AMPS] 4 off 4CX250BM Designs (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 26 Mar 1999 12:42:44 -0500
For reasonable matching you can install individual bias pots and do a simple static adjustment for equal idle currents. Not as good as dynamic balancing but close. The Tokyo High Power HL-1K used a p
/archives//html/Amps/1999-03/msg00625.html (8,480 bytes)

156. [AMPS] Need some Drake L-7 Help (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 26 Mar 1999 10:20:58 -0500
I have repaired several L-7's that had partially shorted bypass caps C-29 and C-30. I use .01 or .02 1KV disc ceramics for replacements. Not sure if the .05 is too high a value or just that the L-7 h
/archives//html/Amps/1999-03/msg00626.html (9,881 bytes)

157. [AMPS] Cathode Impedance Measurements (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 26 Mar 1999 09:21:46 -0500
That is very good info Jon. It also is very timely since I just bought a MFJ-259B and havent even opened the box yet. After designing the input I vaguely remember those discussions but kept out of th
/archives//html/Amps/1999-03/msg00627.html (11,703 bytes)

158. [AMPS] SB-200 Problem (again) (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 26 Mar 1999 09:50:10 -0500
On Wed, 24 Mar 1999 21:39:51 -0600 Marty Tippin <martyt@pobox.com> writes: Ive been away for several days so excuse the late reply. The first thing to check is the output wafer switch contacts, they
/archives//html/Amps/1999-03/msg00628.html (11,892 bytes)

159. [AMPS] Harbach (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 26 Mar 1999 16:22:24 -0500
On Fri, 26 Mar 1999 08:07:57 -0600 "Roy Koeppe" <royanjoy@ncn.net> writes: Has for quite awhile. It would take less time to do a search than ask here. www.harbach.com Simple, eh ? 73 Carl KM1H ______
/archives//html/Amps/1999-03/msg00629.html (7,644 bytes)

160. [AMPS] PS caps (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 26 Mar 1999 15:34:14 -0500
On Thu, 25 Mar 1999 17:17:27 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: Hi Vic, If you want to play the game you have to feel the pain. A quote from the old Beretta TV series. $68 is short mon
/archives//html/Amps/1999-03/msg00630.html (8,287 bytes)

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