1929 TNT Ham Radio Transmitter

This is a 1929 style CW transmitter I built using old parts. It uses a type 45 tube and will put out about 2 watts. Right now it is set up for 80 meters, but…
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25 replies
  4. uniqueandprosperous
    uniqueandprosperous says:

    sorry that was could u put music NEXT to the set where u moved your hand
    over it & would it play that music or send it ?

    Reply
  6. amermtrs
    amermtrs says:

    The coil can be swung around to adjust coupling to the antenna. When the
    two coils are inline, that is the tightest coupling.

    Reply
  8. amermtrs
    amermtrs says:

    @uniqueandprosperous If you have a crystal set that will tune shortwave, it
    would definitely pick up the signal 30 ft away. You wouldn’t hear much
    though because you would need a beat frequency oscillator to beat against
    the signal and produce a tone. I do have another video called spark gap
    transmitter, but there are no tubes in it.

    Reply
  9. uniqueandprosperous
    uniqueandprosperous says:

    Forgive me for asking so many questions & thank u for answering but.. what
    I am trying to learn how to do is send little beeps to a crystal radio set
    .. but the beeps are too fast to tap out & too slow to sound like music
    ..would I still need an oscillator..or is there a simpler & cheaper way to
    send?

    Reply
  11. amermtrs
    amermtrs says:

    @uniqueandprosperous The mic would be inbetween the transmitter and a
    ground rod although this is not good way to modulate a transmitter, and the
    risk of RF burns are high. This style of transmitter is really only good
    for morse code transmission. Whatever method is used to transmit voice will
    cause the frequency to swing. I have no idea about the plates under
    telegraph poles.

    Reply
  13. Dana Brinkmeier
    Dana Brinkmeier says:

    Great demo…did U load up a dummy ? Wattage ? How would you like to try
    the old ” Spark ” powered Xtmitters ? must have been fun at the turn of the
    Century [1900].
    73…..Dana Brinkmeier Vet Rep. Ret….WN6OHG 

    Reply
  14. Jeffrey Young
    Jeffrey Young says:

    I love the old technology examples for the young people learning about
    electronics.
    Having grown up from the 50s to today, I have seen the evolution from tubes
    to todays LSI and surface mount technology. There is much to learn from
    these old circuits as the technology of today uses the same basic theory.

    Reply
  24. The Erod1944 Channel
    The Erod1944 Channel says:

    I haven’t seen a tube “filament warm up” in years. I hate to use the word
    but the tube warm-up seems so much more “organic” than the “click-wumfph”
    start-up of a solid state device. Thanks for the Demo. Ed/Central
    California 

    Reply

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