| To: | Tom W8JI <w8ji@w8ji.com>, amps@contesting.com,"John T. M. Lyles" <jtml@lanl.gov> |
|---|---|
| Subject: | Re: [Amps] Thoriated tungsten lifetime when idling tspa |
| From: | Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk> |
| Reply-to: | g3rzp@g3rzp.wanadoo.co.uk |
| Date: | Sun, 11 Feb 2007 13:26:41 +0100 (CET) |
| List-post: | <mailto:amps@contesting.com> |
Tom said: >They say twice for most tubes we deal with. The exact text says limiting current to two times the operating value helps reduce damage (movement) from repeated filament thermal cycles.< But we all know that filament movement is caused by VHF parasitics, don't we? -:) 73 Peter G3RZP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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