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Total 4 documents matching your query.

1. [Amps] address change (score: 1)
Author: "g8on@btinternet.com" <g8on@btinternet.com>
Date: Thu, 19 Jun 2014 06:55:01 +0100 (BST)
Tnx everyone. Hopefully it has worked now... 73 G3RZP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2014-06/msg00053.html (6,932 bytes)

2. Re: [Amps] 3CX800A7 Spares - cook them periodically? (score: 1)
Author: "g8on@btinternet.com" <g8on@btinternet.com>
Date: Wed, 16 Jul 2014 21:30:59 +0100 (BST)
My experience with ion pumps is pretty limited, going back almost 50 years. The Siemens YH1045 TWT (10kW out, about 6GHz) had an electrode which was kept at about 2kV DC and attracted gas molecules.
/archives//html/Amps/2014-07/msg00051.html (13,486 bytes)

3. [Amps] Ion Pumps (score: 1)
Author: "g8on@btinternet.com" <g8on@btinternet.com>
Date: Mon, 21 Jul 2014 07:49:59 +0100 (BST)
At one time, there were a number of big tx's (100kW+, dating from the 1930s) over here in HF point-to-point service that used 'demountable' valves. These were continuously pumped, and had replaceable
/archives//html/Amps/2014-07/msg00088.html (7,071 bytes)

4. Re: [Amps] Circuit Board Question (score: 1)
Author: "g8on@btinternet.com" <g8on@btinternet.com>
Date: Fri, 1 Aug 2014 09:46:35 +0100 (BST)
According to the ITT 'Reference data for radio engineers', 3 oz (0.0042inches thick) copper will give you 3.5 skin depths at 1.8 MHz. At 30 MHz, one skin depth is 0.00048 inches. At DC and LF, a cond
/archives//html/Amps/2014-08/msg00001.html (8,350 bytes)

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