Drake experts out there, I need help ! TR-3 SN 10892. Rcvr functions fine on all bands. Will not tune up in X-CW position. No plate current, thus no rf out. BFO and mixer appear to work as I can get signal to another receiver on proper freq. Have good rf signal at plate of driver tube on a scope. Have tried new out put tubes. Plate voltage good. Cathode circuit going to ground through antenna relay on X-CW. Screen voltage does not change when going to X-CW In AM position screen voltage is 45 volts. Xtmr gain pot checks ok and have voltage at center tap and it will change. Bias sets up per instruction manual. Any ideas out there ? No plate current, thus no rf out. Sincerely, Boyd W0BUW
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