[cathoderay57]

Here are some pics of the radio, with John's mains transformer fitted. It now works fine off standard mains. I have removed the S-meter drive circuit modifications and reverted the circuit to standard. No meter yet (although I've ordered a Chinese 0-500 uA meter which won't arrive for a while) but I am getting about -2.0v to +2.0v at the meter terminals when I vary the zero-meter pot so looking better. Also the audio is less prone to overload on strong signals and the noise limiter is working as it should. The calibration oscillator doesn't seem to be working so more investigation needed. Does anybody know why there is a 10R series resistor in the heater circuit of the 6AL5 double diode detector/noise limiter? Hum reduction? Cheers, Jerry