Rare Hallicrafters CTC4 clone resurrected from the dead.

[jeyurkon]

I agree with old_coot. You'll still have the heat problem.

I purchased a bunch of NOS seleniums. I didn't have much luck with them. They were o.k. for low power applications, but when trying to run them near their ratings they would heat up and start dropping too much.

There is a conditioning process similar to reforming electrolytics for them, but I haven't tried it.

This company still makes them, CEHCO, but it might be expensive.

Originally Posted by miniman82

I think I might try finding some NOS selenium stacks for my CTC-4 Director, that's the easiest way to fix this problem. Like Bob I've been running a power resistor in conjunction with the new rectifiers, but the heat it generates is objectionable.