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1. [Amps] 3cx300a7 input impedance (score: 1): Author: "john devoldere, ON4UN" <john.devoldere@telenet.be>; Date: Mon, 8 Aug 2005 20:45:09 -0000; Can anyone help me with the input impedance of the 3cx3000a7 tube (used on HF). I require this value to build a proper Pi- filter input circuit. Thank you 73 John ____________________________________; /archives//html/Amps/2005-08/msg00325.html (6,613 bytes)
2. Re: [Amps] 3cx300a7 input impedance (score: 1): Author: Steve Thompson <g8gsq@ic24.net>; Date: Tue, 09 Aug 2005 14:10:24 +0100; The datasheet I have gives values between 46 and 50 ohms for different conditions from 4 to 4.8kV, 300-400W drive and 6-7 kW out. Steve _______________________________________________ Amps mailing li; /archives//html/Amps/2005-08/msg00327.html (7,165 bytes)
3. Re: [Amps] 3cx300a7 input impedance (score: 1): Author: "Bob Maser" <bmaser@tampabay.rr.com>; Date: Tue, 9 Aug 2005 09:30:19 -0400; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2005-08/msg00329.html (7,817 bytes)
4. Re: [Amps] 3cx300a7 input impedance (score: 1): Author: "rees.a" <rees.a@btconnect.com>; Date: Tue, 09 Aug 2005 14:23:46 GMT; This is waht I have, hope it helps: Characteristics Plate Dissipation (Max.) 4,000 Watts Screen Dissipation (Max.) -- Watts Grid Dissipation (Max.) 225 Watts Frequency for Max. rating (CW) 110 MHz Am; /archives//html/Amps/2005-08/msg00331.html (8,762 bytes)

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