How to test Dow Key relay Ex. EF Johnson 500 High power Ham Radio tube transmitter simple procedure

Описание: Have seen this issue many times in the past. Transmitter outputs power, dow key fails to toggle, boom! damage to the transmitter. Not a good situation, however there is a easy fix, test the system before putting it into operation. Yes, this may be common sense, but we all get in a rush, forget to look at the small things, then they turn into big issues. Here are a few simple steps to check the system and avoid damage.