Heathkit SB-230 Tetrode 4CX350F swap meet
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- čas přidán 22. 08. 2024
- An unknown old SK ham's former project, no schematic too. Looks like parallel Tetrodes of 4CX250 or 4CX350 valves. The plates high voltage transformer and caps and rectifiers are gone. The added 3 transformers are I think for the filament and control grid biasing.
You took the time before switching it off!!!!! ;-)
What did you do with it?
Anyone know the number of the relay tube that would have been origional to the unit? No, not the 8873, the other tube.
I know where one is with a Pair of 4CX350’s in it.