The 3CX-800A7 has a max anode V rating of just 2250 vdc.
The AL-80A/B has 3100 vdc no load on it....and 2750 vdc loaded.....so you
can scratch that tube off ur list. (3CX-800A7)
The 3CX800U7 has a max anode V rating of just 1800 vdc. Scratch that tube
off your list.
3CX-400A7 has a max anode V rating of 2200 vdc. Scratch that tube as well.
3CX-400U7 rated for just 1500 vdc. Scratch that tube.
GI46B rated for a max of 2 kvdc. scratch that tube.
I'm telling you, you are wasting your time.
Just rebuild the amp, power supply, and whatever else is wrong with
it.....and stuff a new 3-500Z into it....and be done with it.
CTR engineering also sells a real compact output TR relay board ( that's
correctly sequenced)..that has now been used successfully in a lot of
different amps. Quiet..and fast. Comes in 12/24/120 vdc versions.
https://www.ctrengineeringinc.com/relays/ $59.00
Jim VE7RF
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