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Tube radio help?

Discussion in 'Home Brew' started by T23, Sep 29, 2010.

  1. T23

    T23 Active Member

    Apr 17, 2010
    Likes Received:
    Hello again, I am trying to modify an AM only tube radio ( a Philco 46-350 Reciever) to transmit, I found an article explaining how to convert a Tube radio to a transmitter and I just needed some clarification on what this means
    "The input device (microphone, cd player, ect.) would go between the plate and the ground. "

    Any Ideas?



  2. Shockwave

    Shockwave Sr. Member

    Sep 19, 2009
    Likes Received:
    In the last 40 years the only person I ever saw convert a receiver into a transmitter was the professor on Gilligan"s Island. Strange for a guy that couldn't even patch a hole in a boat. Sure it is possible but the results are hardly worth the effort. Power output would be exceptionally low. Frequency stability would be poor and likely to drift while transmitting. Connecting the "input device" is more complicated then simply connecting it between the plate and ground. Some type of modulation transformer would be required. Not a project I would bother with.
  3. Captain Kilowatt

    Captain Kilowatt Professional Amateur
    Staff Member

    Apr 6, 2005
    Likes Received:

    Agreed. I don't think I would want to connect anything directly between he plate and ground.At least nothing without a good fuse. :D

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