Description
''All the way with AWA'' ! ((Amalgamated Wireless Australasia).
Three cheers for the Australian 6G8G tube manufactured by Amalgamated Wireless Valve (AWV) a division of AWA.
AWA manufactured domestic radios using octal base tubes at their huge Ashfield site in Sydney in the 1930's and 1940's. None of these domestic radios contained a separate Radio Frequency Amplifier stage.
t should be noted that thers receivers do NOT employ a separate RF amplifier stage, and as a consequence, the sensitivity on reception is only in the vicinity of 10 to 50 μV. As a comparison, a well designed communications receiver of that era had a much improved sensitivity of around 1 to 5 μV. (microvolts) due to the addition of a separate Radio Frequency Amplifier stage.
If you're located a long distance from the transmitter(s), the poor sensitivity of this receiver will result in ''background noise'' when you attempt to tune in the station....or...you may not even be able to hear the station !
Note the MASSIVE mains transformer on the 4 tube radio compared to the much smaller transformer on the 5 tube radio.
Footnote: Would love to own a Mk4 AVO Valve Tester in fully restored condition ! Also seeking that damned elusive NOS (New Old Stock) 6G8G tube