[innellan House]

Thank you for your replies. Julian, I've had the control unit/amplifier removed from the car and tuned to ABC radio Brisbane, powered by a spare car battery (everything works). It is possible to run the radio as an electrically independent unit, with lightweight rechargeable 12V DC NiMH or Lithium batteries that can store 15Ah. With a 3.7A current draw for the B amplifier, this provides a few hours of listening. The commercially available power inverters only convert positive earth to negative, so this is no use to me. There is a chap on the Sunshine Coast that does the basic AM/FM plus auxiliary input upgrade, with integrated amplification (and conversion of the radio to negative ground) whilst preserving visual and functional integrity on the outside. But this does destroy originality and there is something special about the cackle and timbre of an old valve radio. Because there is no reference to this particular radio in the 401 owners manual, I will try to send (1) the service manual (2) users instruction for tuning (3) a period advertisement....regards, Vincent.