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3-500Z POWER TUBE GRAPHITE MATCHLETT 3-500ZG GASSY MAY BE REVIVEABLE W/LOW HV? For Sale
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3-500Z POWER TUBE GRAPHITE MATCHLETT 3-500ZG GASSY MAY BE REVIVEABLE W/LOW HV?:
$45.00
Tube is in excellent conndition but gassy. The only amp I had to put it in was an AL 80B that comes on at full HV immediately when turned on and the tube would arc. One could likely revive this tube if you have to ability to reduce HV like with a variac or a Heathkit SB 220 / 221, HL2200, something that will let you reduce high voltage. So that you could load up the tube with a continuous signal and get the anode hot enough to activate the getter material and de gas the tube. So it\'s a project and sold as is for parts. Thanks; KF4ZRI.
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