Picked up some antique and vintage test equipment

[earlyfilm]

Originally Posted by Dangler

Knight tube tester. Don't know the model yet.

Dangler,

In my opinion, it is a very good emissions tester!

If it was made in the 1950's, it was only known by its name "Knight Tube Tester" and by its catalog part number.

If it was made in the early 1960's, it was the 600, which later became the 600a, the 600b, etc., a probable tribute to Hickok who used the same number.

I've owned mine since 1958 and I am not the original owner, who built it. He decided that he was not cut out for electronics repair and traded it to me in exchange for repairing his ham transmitter.

It was still working when I last used it about 2000. I dug it out this summer and discovered that it now needs recapping.

The circuit is almost the identical to the Heathkit TC 1 & TC 2 which came out a little later and is based on an older Triplet circuit.

It was available in a metal case with no top and an a gray oilcloth covered wooden case with a cover. I think the wood case was replaced with a all metal enclosed one in the later years.

James