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Total 145 documents matching your query.

121. Re: [Amps] AMPS Administrator (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Sun, 8 Oct 2006 15:08:26 -0500
Danny, It's very doubtful that it is really the administrator. I notice it was _Administrator in the email address. I went to the original Amps email I received and extracted the heading info and cop
/archives//html/Amps/2006-10/msg00060.html (11,549 bytes)

122. [Amps] FW: AMPS Administrator (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Sun, 8 Oct 2006 18:16:53 -0500
Your right Vic, I just glanced at the entire email address which is very easy to forge. Smtp1.30gigs.com can't be forged, I don't think, since the originating mail server renders that part of the hea
/archives//html/Amps/2006-10/msg00064.html (7,512 bytes)

123. [Amps] FW: PEP power.. (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Mon, 16 Oct 2006 08:24:42 -0500
less instantaneous peak voltage necessary to produce the same PEP with a given audio frequency. Is this correct? If so, wouldn't a wide band RF signal be less detectable on the receiving end than th
/archives//html/Amps/2006-10/msg00169.html (7,810 bytes)

124. [Amps] FW: Testing amp with no air flow (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Fri, 20 Oct 2006 08:11:34 -0500
I've tested the filament on the 3cpx5000a7 without air flow but with filament running less than 15 seconds. I personally would not fret over hooking the 8877 filament up without air flow for a very s
/archives//html/Amps/2006-10/msg00212.html (8,403 bytes)

125. Re: [Amps] Testing amp with no air flow (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Fri, 20 Oct 2006 10:29:33 -0500
That's good news to know Theo. Thanks for passing it along. The 8877 would probably evaporate after a long period of filament operation without air flow. Larry N5BIP "I've tested the filament on the
/archives//html/Amps/2006-10/msg00214.html (8,412 bytes)

126. [Amps] FW: More information for "What NOT to buy".. (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Tue, 24 Oct 2006 06:31:01 -0500
Chris, It's a great starter tube but you really have to be careful purchasing 4-400 tubes. Many of them are low to no output. Unless they were guaranteed I wouldn't bother to buy. Those on eBay offe
/archives//html/Amps/2006-10/msg00264.html (7,458 bytes)

127. [Amps] [amps] 10 MFD 3000 VDC oil filled capacitor (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Wed, 25 Oct 2006 06:12:45 -0500
A good friend of mine, W5AHN, has a GE Oil Filled Capacitor 10MFD / 3000 VDC available at swap.qth.com . http://swap.qth.com/search-results.php?keywords=559812 <http://swap.qth.com/search-results.php
/archives//html/Amps/2006-10/msg00282.html (6,717 bytes)

128. [Amps] FW: Zener Bias Replacement (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Mon, 6 Nov 2006 11:14:06 -0600
No problem at all. When I need a higher bias voltage I use HV diode modules. Regards, Larry N5BIP I need to replace a zener bias diode. I have a ton of 1N5408's. Any problems with using a string of 9
/archives//html/Amps/2006-11/msg00086.html (6,693 bytes)

129. Re: [Amps] FW: Zener Bias Replacement (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Mon, 6 Nov 2006 14:00:15 -0600
Hi Marv, Thanks for the info. I don't have any amps with a biasing need of over 40 volts. I'm really not sure of the IMDs and I don't have a spectrum analyzer to gather accurate info. The modules I u
/archives//html/Amps/2006-11/msg00092.html (8,244 bytes)

130. [Amps] FW: Zener Bias Replacement (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Tue, 7 Nov 2006 15:32:15 -0600
OK... you all have sold me on the idea of using zeners instead of standard diodes. At least by using standard diodes I have determined the bias voltage I need. Now I have to find a zener supplier tha
/archives//html/Amps/2006-11/msg00109.html (9,648 bytes)

131. [Amps] need new or used 4cx400a tubes (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Fri, 1 Dec 2006 08:29:41 -0600
I'm looking of some new or used 4cx400a tubes for a local ham. Thanks. Larry N5BIP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/ma
/archives//html/Amps/2006-12/msg00000.html (5,816 bytes)

132. Re: [Amps] need new or used 4cx400a tubes (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Mon, 4 Dec 2006 06:35:26 -0600
My friend ask specifically for 4cx400a tubes needed. Thanks, Larry N5BIP Do you mean 4-400A glass envelope tetrode tubes? Or 3CX400A7 ceramic triodes? 73 Bill wa4lav _________________________________
/archives//html/Amps/2006-12/msg00011.html (7,491 bytes)

133. Re: [Amps] need new or used 4cx400a tubes (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Tue, 5 Dec 2006 09:54:52 -0600
GS-36B is the same tube as a the 4CX400A. See link below. http://www.df6na.de/df6na/gs36b.htm Larry N5BIP My friend ask specifically for 4cx400a tubes needed. Thanks, Larry N5BIP Do you mean 4-400A g
/archives//html/Amps/2006-12/msg00025.html (7,915 bytes)

134. [Amps] (no subject) (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Sat, 9 Dec 2006 16:07:11 -0600
I'm looking for a tech manual on a newly acquired RF Plasma Products 1000g. It's the one with the 8877 tube running at 13.56 MHz. I'd like to get it running so I can test a couple of 3cpx1500 tubes I
/archives//html/Amps/2006-12/msg00051.html (6,777 bytes)

135. [Amps] need manual for RF Plasma Products HFS1000G (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Sat, 9 Dec 2006 16:20:53 -0600
I forgot to include my subject line on first attempt at posting. Here it is again. I'm looking for a tech manual on a newly acquired RF Plasma Products 1000g. It's the one with the 8877 tube running
/archives//html/Amps/2006-12/msg00052.html (6,536 bytes)

136. Re: [Amps] Ferrite Rod (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Tue, 2 Jan 2007 09:32:02 -0600
I used the .5 X 4 rods material type 33 with #10 enamel wire wound to the ends in a 3cx3000a7 amp and it works on 3.75 MHz just fine. It sits in from of a fan in the lower deck compartment. At 51.5 a
/archives//html/Amps/2007-01/msg00024.html (7,884 bytes)

137. Re: [Amps] Ferrite Rod (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Wed, 3 Jan 2007 06:45:43 -0600
Jim, I believe you'll be safe running paralleled 30 amp chokes in front of the 800 CFM. If you don't have the chokes already wound you might wind single windings on each ferrite rod leaving just a ve
/archives//html/Amps/2007-01/msg00038.html (9,895 bytes)

138. Re: [Amps] Ferrite Rod (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Wed, 3 Jan 2007 07:11:33 -0600
Jim, Forgot to mention this but you might consider floating the filament transformer. I've never tried the approach myself but have heard others that have had good results with it. It's pretty easy t
/archives//html/Amps/2007-01/msg00039.html (10,370 bytes)

139. Re: [Amps] Ferrite Rod (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Wed, 3 Jan 2007 07:52:49 -0600
Peter, Henry made filament chokes using copper tubing and what looked to be the center insulation and conductor from RG8U slid into the center of the tubing. This tubing was then formed into a coil o
/archives//html/Amps/2007-01/msg00042.html (8,963 bytes)

140. Re: [Amps] Ferrite Rod (score: 1)
Author: "Larry Carman" <lncarman@swbell.net>
Date: Wed, 3 Jan 2007 08:06:31 -0600
Tom, Thanks for pointing that out. I wasn't thinking about the canceling effects of bifilar wound and the need to do so especially under high currents. Larry N5BIP reason being nothing cancels magnet
/archives//html/Amps/2007-01/msg00043.html (8,308 bytes)

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