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References: [ +from:robrk@nidhog.net: 179 ]

Total 179 documents matching your query.

101. Re: [Amps] low Q output matching (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Tue, 13 Nov 2012 15:14:59 -0500
What you mean ancient ??? How did Central Electronics do it ? 100v, 200V, 600L, not big power, but seemed to play. Hi Carel, There's an ancient article in the February 1962 issue of 73 Magazine, pp 1
/archives//html/Amps/2012-11/msg00093.html (8,357 bytes)

102. Re: [Amps] 4CX1500B help needed...high screen current in HF-8020 PA (score: 1)
Author: R Morris <robrk@nidhog.net>
Date: Mon, 14 Jan 2013 14:19:37 -0500
I have been struggling trying to figure out why I have high screen current in my Collins HF-8020 1KW PA. Did for a data sheet for the tube. See what they suggest. ___________________________________
/archives//html/Amps/2013-01/msg00086.html (8,000 bytes)

103. Re: [Amps] Look at this Custom 10kW Amp (score: 1)
Author: "R.Morris" <robrk@nidhog.net>
Date: Tue, 09 Apr 2013 23:58:05 -0400
The same place you drive a 500 hp Corvette....and own it for the same reasons. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailma
/archives//html/Amps/2013-04/msg00046.html (7,749 bytes)

104. [Amps] Build the Big Amp (score: 1)
Author: RMorris <robrk@nidhog.net>
Date: Wed, 26 Jun 2013 10:21:16 -0400
Don't know anything more than the page. http://www.techshop.ws/ I like the hand held plasma cutter..... Hold my beer and watch this.... Big metal shear Bob....K2RK Sent from my iPad _________________
/archives//html/Amps/2013-06/msg00257.html (6,392 bytes)

105. Re: [Amps] Clipperton-L question (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Wed, 11 Sep 2013 17:49:07 -0400
One day when I switched from CW to SSB mode on my Clipperton-L it blew the fuse with a good bang. Why switch? Higher plate volts, lower grid current. Don't have to play the 1 kw input game any more.
/archives//html/Amps/2013-09/msg00051.html (7,067 bytes)

106. Re: [Amps] Clipperton-L question (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Thu, 12 Sep 2013 09:51:03 -0400
Why would you get a surge ? Every thing has been "on", the caps are charged most of the way, you are just going up a couple hundred volts. The amp groans quite a bit when first powered on of course.
/archives//html/Amps/2013-09/msg00071.html (7,441 bytes)

107. Re: [Amps] Initial RF testing of 4CX1000A amplifier (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Wed, 6 Nov 2013 14:42:08 -0500
Your link seems broken. Your keyboard misspell something ?? Simpson meters are really nice but a little pricey for ham use. There are imported Simpson knockoffs available from _www.bocatechnic.com_ (
/archives//html/Amps/2013-11/msg00073.html (8,802 bytes)

108. Re: [Amps] Best source for Gigavac GH-1 ? (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Sat, 9 Nov 2013 16:59:35 -0500
Gigavac ? Thought they had Ham pricing. http://www.gigavac.com/catalog/amateur-radio.html Need to change out my amp's vacuum T/R relay. QSK and typically lasts three years. The OEM is the Gigavac GH-
/archives//html/Amps/2013-11/msg00180.html (7,180 bytes)

109. Re: [Amps] 3CX1500A7 versus 3CPX1500A7 (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Sun, 9 Feb 2014 11:36:27 -0500
Do you know what the voltage at the pins measure now? Unless you have a variac in line, I bet it's not 5.000. Most of the old transformers in my junk box are 115v. My line voltage, as we speak is 121
/archives//html/Amps/2014-02/msg00059.html (7,496 bytes)

110. Re: [Amps] 3CX1500A7 versus 3CPX1500A7 (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Sun, 9 Feb 2014 22:17:02 -0500
I have step/start and a variac on the filaments. I measured at the pins, with tubes on, then set the panel meter/ homebrew scale to read 5.0. Meter is on the fil secondary, before the fil choke. It's
/archives//html/Amps/2014-02/msg00066.html (10,246 bytes)

111. Re: [Amps] 5V 15A Wanted (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Wed, 19 Mar 2014 23:12:43 -0400
Anything and a variac ? Thanks 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps ____________________
/archives//html/Amps/2014-03/msg00117.html (6,876 bytes)

112. Re: [Amps] B&W PT-2500A on 10m? (score: 1)
Author: RMorris <robrk@nidhog.net>
Date: Wed, 2 Apr 2014 13:11:29 -0400
My feeble brain seems to think your amp was made by Viewstar (Canada ?) and B&W stuck their name on it. Worth a Google. Sent from my iPad _______________________________________________ Amps mailing
/archives//html/Amps/2014-04/msg00016.html (7,169 bytes)

113. Re: [Amps] B&W PT-2500A on 10m? (score: 1)
Author: RMorris <robrk@nidhog.net>
Date: Wed, 2 Apr 2014 14:38:42 -0400
http://lists.contesting.com/_amps/2001-01/msg00217.html Sent from my iPad _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/lis
/archives//html/Amps/2014-04/msg00017.html (8,996 bytes)

114. Re: [Amps] 3-500Zs inverted (score: 1)
Author: RMorris <robrk@nidhog.net>
Date: Thu, 3 Apr 2014 13:32:03 -0400
Don't forget to change the rotation of the fan and switch to the other sideband..... Sent from my iPad _______________________________________________ Amps mailing list Amps@contesting.com http://lis
/archives//html/Amps/2014-04/msg00029.html (8,093 bytes)

115. Re: [Amps] 3-500Zs inverted (score: 1)
Author: RMorris <robrk@nidhog.net>
Date: Thu, 3 Apr 2014 14:51:56 -0400
But if it is Down Under and upside down, the the Coriolis effect would return to the normal pattern. Sent from my iPad _______________________________________________ Amps mailing list Amps@contestin
/archives//html/Amps/2014-04/msg00031.html (9,569 bytes)

116. Re: [Amps] 3-400Z question (score: 1)
Author: rmorris <robrk@nidhog.net>
Date: Sun, 13 Apr 2014 13:31:01 -0400
Sell them to someone with an old Henry and do something modern. Sent from my iPhone _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m
/archives//html/Amps/2014-04/msg00136.html (7,631 bytes)

117. Re: [Amps] Bird Slug Frequency Curves (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Wed, 28 May 2014 23:10:20 -0400
They are in the instruction book, what might be on their site. I can scan to PDF when semi-awake. It was to be used if you wanted to operate a slug outside the stated frequency limits. Does anyone kn
/archives//html/Amps/2014-05/msg00137.html (7,750 bytes)

118. Re: [Amps] Henry 3k Filament transformer taps (score: 1)
Author: Robert Morris <robrk@nidhog.net>
Date: Mon, 8 Sep 2014 09:17:49 -0400
Are you sure it's 240? I'm sitting watching my fancy UPS, on the TV stuff, beep with 124(248) coming out of the wall. Lots of stuff in the junk box says 115 if not 110. Bet your transformer is from t
/archives//html/Amps/2014-09/msg00006.html (8,131 bytes)

119. Re: [Amps] Eimac WEB site (score: 1)
Author: RMorris <robrk@nidhog.net>
Date: Fri, 21 Nov 2014 14:22:07 -0500
Seems to work for me...... Firefox on a Mac. http://www.cpii.com/product.cfm/9/22/75 _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/
/archives//html/Amps/2014-11/msg00037.html (6,903 bytes)

120. Re: [Amps] Power from Pair of Eimac 4 x 150 a / 7034? (score: 1)
Author: RMorris <robrk@nidhog.net>
Date: Sat, 27 Dec 2014 17:12:44 -0500
Guess at 2X the plate dissipation (Max)... 2 X300 = 600. Build it so, later, you can plug in 4x250's or 350's. _______________________________________________ Amps mailing list Amps@contesting.com ht
/archives//html/Amps/2014-12/msg00111.html (7,590 bytes)

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