On Wed, 25 Mar 98 22:13:46 -0600 Jon Ogden <email@example.com> writes:
>I have a couple of Penta PL-175As that were pulled from an old
>Johnson-Viking Invader. Is this tube a replacement for the 3-500z?
>sure looks a lot like it. If not, can someone point me to the specs
>this tube and what it does? I can't find data on it in any of my tube
>Thanks es 73,
It is a pentode version of the 4-400A Jon; in use it was a direct swap
for the 4-400A by just grounding the suppressor grid. Its claim to fame
was a slight bit more output.
The Invader came with 4-400A's BTW.
73 Carl KM1H
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