Bee,
I highly recommend the RF Parts matched pair of 3-500ZGs. They have a full
one-year warranty,
with a pro-rated second year. I have been running mine hard in AM mode and
they're still pumping
out full output.
I actually just swapped them from my TL-922 to my recently acquired Henry 3K-A
and they're pumping
out the RF!
Should be about $310 delivered to your door-step...
Joe,
N3JI
--- Bee Walton <k4jld@juno.com> wrote:
> The 3-500Z tubes in my AMP INT 3-500ZC amplifier are shorted between
> filament and grid. There may be more wrong but this is a start.
>
> Question. What is my best source for obtaining the 3-500Z tubes? Are
> Eimac tubes still available? Do I want the ZG with the graphite anode?
> Will the G require any changes in the amp? Do I need a matched pair?
> What about non-USA made tubes?
>
> Thanks again,
>
> Bee, K4JLD
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