Beautiful vintage Radiotron ECC803S tube TV7 tested very good. Results in photos. Whereas on the TV7 tester a reading of 32/32 is the equivalent of 60% Gm, this tube tested 45/43.
Beautiful vintage Radiotron ECC803S tube TV7 tested very good. Results in photos. Whereas on the TV7 tester a reading of 32/32 is the equivalent of 60% Gm, this tube tested 45/43.