Talk to Ten Tec service. It may be the bias has changed on the tubes
due to component failure. I doubt that the 3-500's are the problem.
tnx es 73 de John, WA5TWL
"When CW is no longer a requirement, it will be a necessity"
Jim Miller WB5OXQ wrote on 7/9/2006, 10:20 PM:
> I have a Centurion about 6 years old that has always made around
> 1200-1300 watts on all hf bands except about 1000 on 10 meters. I
> recently had a lightning strike to my fiberglass dual band vhf uhf
> antenna on a different tower from my hf antennas and neither of my hf
> transceivers were damaged. I now find that I can only get about 700
> watts on any band driving the amp with either transceiver. Could this
> have damaged the tubes? I don't mind a new pair of 3-500's if that
> will fix the problem. Should I buy the regular 3-500z tubes or the zg
> graphite models. Will I gain anything by using the graphite plate
> tubes? Any mods anyone can recommend that will improve the amp
> performance while I am in there? Suggestions please!
> Jim & Ella Miller
> WB5OXQ & KA5EPM
> Abby & Sparky
> Dalmatian Furbabies
> Waco, TX
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