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Total 1318 documents matching your query.

161. [AMPS] SB200 with Kenwood TS450 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sat, 27 Mar 1999 11:02:30 -0500
On Sat, 27 Mar 1999 08:50:54 -0500 "brad roope" <w1rqbrad@mdc.net> writes: Works fine as-is. The KW can handle the -125V on the relay line, many other rigs cant. For about $20 Harbach has a SoftKey k
/archives//html/Amps/1999-03/msg00638.html (7,555 bytes)

162. [AMPS] Amp opinion/infomation requested ASAP!! (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sat, 27 Mar 1999 10:54:23 -0500
On Fri, 26 Mar 1999 22:16:36 -0700 "Michael J. Baker" <K0qz@primenet.com> writes: Ill buy it at that price! Runs OK on 30 and 17M as is, needs a few plate choke turns removed for 12M. If you keep it
/archives//html/Amps/1999-03/msg00639.html (11,618 bytes)

163. [AMPS] Amp opinion/infomation requested ASAP!! (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 28 Mar 1999 10:44:20 -0500
On Sat, 27 Mar 1999 19:55:46 -0600 "Greg Gobleman" <k9zm@frontiernet.net> writes: Loading Heavy actually means to DECREASE the Load C value, it is confusing. On top of that the 0-100 panel labeling i
/archives//html/Amps/1999-03/msg00645.html (10,006 bytes)

164. [AMPS] Amp opinion/infomation requested ASAP!! (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 28 Mar 1999 20:28:35 -0500
On Mon, 29 Mar 1999 10:15:04 +1000 "Graham Jones" <g.jones@bom.gov.au> writes: I believe you picked up on two items and left out the remainder Graham. The minimum bias and drive power are very import
/archives//html/Amps/1999-03/msg00649.html (11,836 bytes)

165. [AMPS] Startup after long storage (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 29 Mar 1999 10:07:37 -0500
On Sun, 28 Mar 1999 21:47:58 -0500 "Dick Green" <dick.green@valley.net> writes: As suggested my the multitude on the reflector a few dozen times. Preferably with a Variac, or light bulbs in series wi
/archives//html/Amps/1999-03/msg00660.html (7,410 bytes)

166. [AMPS] Amp opinion/infomation requested ASAP!! (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 29 Mar 1999 10:01:00 -0500
On Mon, 29 Mar 1999 02:20:58 +0100 Pete Smith <n4zr@contesting.com> writes: Agreed. I have modified the output loading values of just about every commercial amp I have owned to do just that on 80-160
/archives//html/Amps/1999-03/msg00661.html (11,628 bytes)

167. [AMPS] Cathode Impedance Measurements (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 29 Mar 1999 10:19:55 -0500
Another problem area is that the MFJ-259B manual recommends a resistor " equaling the approximate driving impedance of each individual tube is installed between the cathode of each tube and the chass
/archives//html/Amps/1999-03/msg00662.html (11,265 bytes)

168. [AMPS] Cathode Impedance Measurements (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 30 Mar 1999 09:07:24 -0500
Oh ? Since when? If you meant tube mfg then u are only partially correct. Plus the short form Eimac catalogs do not mention it at all but list most other parameters. Pretty damn confusing to someone
/archives//html/Amps/1999-03/msg00688.html (8,905 bytes)

169. [AMPS] Tuners and VSWR (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 30 Mar 1999 10:39:19 -0500
On Mon, 29 Mar 1999 16:05:06 -0800 "Radiodan W7RF" <RFpower@radiodan.com> writes: Cut one for 3550 and the other for 3800. Run at as close to right angles as you can and fed with one coax. You can ru
/archives//html/Amps/1999-03/msg00689.html (8,425 bytes)

170. [AMPS] Re:HV on tube w/o filament voltage (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 30 Mar 1999 09:34:32 -0500
The old NCL-2000 tetrode amp turned on the filaments and bias first. After the 90 second delay only then could you apply HV and screen. Is this procedure myth and seemingly applied only to tetrodes?
/archives//html/Amps/1999-03/msg00690.html (9,454 bytes)

171. [AMPS] LP Filter Performance (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 30 Mar 1999 10:59:16 -0500
I believe it was John Belrose who wrote in QST Technical Correspondence several years ago. He measured and reported that the topology as used in ham LP filters had a minimal effect on performance at
/archives//html/Amps/1999-03/msg00691.html (8,864 bytes)

172. [AMPS] Amp opinion/infomation requested ASAP!! (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 30 Mar 1999 10:01:12 -0500
Questionable. Second, low pass filters are designed to have And so are antenna tuners. All bets are off otherwise. I run a 3KW ICE LP filter on the output and a relay switched set of bandpass filters
/archives//html/Amps/1999-03/msg00692.html (11,382 bytes)

173. [AMPS] LP Filter Performance (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Wed, 31 Mar 1999 09:42:26 -0500
I know that but its not easy to carry my reactive dummy load into work! Picked up one of those loads several years ago at the National Radio auction. Was used for acceptance testing of a 5KW military
/archives//html/Amps/1999-03/msg00718.html (8,845 bytes)

174. [AMPS] HV Switching Supply (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 1 Feb 1999 12:35:50 -0500
I dont know yet Peter, this project is just getting started and I'm far from a switcher expert. I'll ask my "collaborator" when he gets back from a Navy conference in Dizzy Central. 73 Carl KM1H I pr
/archives//html/Amps/1999-02/msg00026.html (9,022 bytes)

175. [AMPS] duplicate copies (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 1 Feb 1999 12:35:11 -0500
On Mon, 1 Feb 1999 08:29:20 -0500 "Gilmer, Mike" <mgilmer@gnlp.com> writes: See if there is a common E-Mail adr or provider. Someone may be playing games and the easiest solution is to filter it out.
/archives//html/Amps/1999-02/msg00027.html (11,163 bytes)

176. [AMPS] HV Switching Supply (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 2 Feb 1999 11:34:53 -0500
On Mon, 1 Feb 1999 18:46:08 +0200 "John Fielding" <johnf@futurenet.co.za> writes: Elementary my dear Watson, elementary. 73 Carl KM1H _________________________________________________________________
/archives//html/Amps/1999-02/msg00069.html (8,092 bytes)

177. [AMPS] 8877 @ 50mhz ??? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 2 Feb 1999 11:23:53 -0500
The same as HF. However 3500VDC no load simplifies the PS a bit if you use electrolytics. 73 Carl KM1H ___________________________________________________________________ You don't need to buy Intern
/archives//html/Amps/1999-02/msg00070.html (7,919 bytes)

178. [AMPS] HV Switching Supply (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 2 Feb 1999 12:28:08 -0500
On Mon, 1 Feb 1999 13:26:05 -0500 "Steve Iezzi" <siezzi@aeronix.com> writes: The HV section is planned as an open loop Steve. It all actually depends on performance vs cost. A HV regulation of 10% or
/archives//html/Amps/1999-02/msg00072.html (9,029 bytes)

179. [AMPS] Metering a GG amp (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 2 Feb 1999 11:50:34 -0500
Home made shunts work fine if you have the ability to accurately calibrate. Fine copper wire shunts also are not very temperature stable and suitable resistance wire is not a common item in small qty
/archives//html/Amps/1999-02/msg00073.html (8,764 bytes)

180. [AMPS] electrolytics (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Tue, 2 Feb 1999 11:45:54 -0500
On Mon, 01 Feb 1999 14:01:45 -0600 Mark Brown <kb0pyo@rconnect.com> writes: Pick up a Mouser catalog and check out the CDE 381LX series or Mallory CGS computer grade. There is retrofit room in the T-
/archives//html/Amps/1999-02/msg00074.html (8,250 bytes)

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