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Navy TCS restoration

Testing tubes

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- May 02, 2020

Got the four 1625 tubes out. One is not original. Two of the four are shorted and bad.
I'll have to go look at my collection for replacements.

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Replacement tubes

- May 02, 2020

Looking through my collection I came across these two NOS US Navy tubes. Says tested OK 2-2-1947. Do you think they are still good?

Power into the dummy load

- May 04, 2020

I was able to tune it up into the dummy load on 40 meters. I could hear it on my local receiver. Finally progress. I'll probably button it back up and make everything safe now.

Finally got the receiver running!

- April 27, 2020

The TCS set is finally working. It turned out to be something stupid. Nowhere in the net or in the manual does it sat that the transmitter has to be plugged into the power supply in order to operate the receiver. Apparently there are jumpers and a relay that enable the receiver when the transmitter is plugged in. Finally! I've been banging my head on the wall for a week on this issue. The clue was when I turned on the parts receiver with all good tubes and I got the exact same symptoms. That told me it was most likely something to do with the power supply...