Quote:
Originally Posted by Electronic M
Your wrong! AA5 hot chassis radios date back to the early to mid 1930's.....The first ones did not drop the entire line voltage in the tubes, but instead used a resistor in the cloth cord to drop the needed voltage that the tube string did not.....They had a penchant for their cords catching fire and were often referred to as "curtain burners". The first AA5s predated octal and their tubes had 2-3 digit ID numbers. If you doubt me I have a 1938 Philco that is a later example of that early design and it's tube compliment I could show you.
IIRC there were some euro AA5 like designs....Rare but I do believe they existed. Not all of europe was always 240v 50Hz.....They had various voltages in the beginning.
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What he said - the way you can tell a euro set is live chassis, is when the tubes start with a letter other than E, E meaning 6.3 Volts. Usually other letters like U or P or etc means a series string connection typical to live chassis design