>
>I recently purchased a Ten Tec Titan amp uhich uses 3CX800A7s and am
>uncomfortable at the ease with which the grid current rises with an
>increase in SWR. Does anyone know of a grid trip circuit or kit for
>such that can be purchased.
? The Titan 425 that I repaired had unfatal gold-sputtering in both
tubes. If the amplifier were in my garage, I would test the tubes for
gold-sputtering with a high. pot tester. If leakage current with pos. on
the anode is substantially greater than with neg. on the anode, gold
meltballs are indicated. (note: there is a way of dealing with small
amounts of loose gold)
>
>There was a circuit in an old issue of QST but the relay used was not
>identified and I feel better purchasing something that has already been
>tried than experimenting with $700 tubes.
>
- cheers, Stan
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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