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Zenith Designed Tube AM Broadcast Transmitter Kit For Antiques

Discussion in 'Ham Made Gear' started by WA7VGN, Apr 9, 2013.

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  1. WA7VGN

    WA7VGN Ham Member QRZ Page

    Zenith Designed Tube AM Broadcast Transmitter Kit
    These are meant to transmit programming to Antique tube radios.

    Tube Radio AM Broadcast Transmitter
    Now your antique radio can play some of the same programs it did when it was new! With your CD, Ipod or cassette tape player, phonograph or high output microphone, You can even play a musical instrument. through it. this two tube transmitter becomes a miniature AM broadcasting station, patterned after the 1939 Zenith model S-7000 Wireless Record Player.

    As per the F.C.C rules Part 15 this is a perfectly legal transmitter
    And you need no license to use it.
    The rules state that the transmitter may only transmit 100mw input into a 3 meter antenna and transmit no farther than 200 feet
    and this transmitter meets all these rules.

    The transmitter electronically is overbuilt on purpose so that it will
    last a lifetime. no part in this transmitter is overworked in any way.

    And another big plus is if you get a power surge or spike this transmitter has a better
    chance of surviving
    than the transistor models out there.

    Assembly Instructions
    1. Plug in the 12AU7 tube into its socket
    2. Plug the 6SA7 into its socket.

    3. Attach the 3 meter antenna to the ANT terminal

    4. Plug the unit into a 115 to 120 volt 3 prong home wall outlet


    Power 115-120 volts AC (240 volt version $30 additional on request)

    Power usage 5 watts
    Size. 5 1/4" High.. 7" wide.. and 7" deep.
    Tubes 1. 12AU7 1. 6SA7

    Frequency 850khz to 1050khz (Will gladly set it to transmit on any frequency you want)
    (PLEASE tell me what frequency you want to use?)

    Power in 1 volt peak audio power (headphone volume)
    Power out 100mw
    Audio. Grid modulated.
    Antenna 15 foot of #20 wire
    Frequency drift +- 20 cycles after warm up.
    Chassis Is made from recycled aluminum real estate signs (waste not want not)

    Comes with
    1. Transmitter kit

    1. instructions
    1. 3 meter antenna wire.
    Email technical support any time

    Needed items
    1. Patch cord with RCA type connector as shown
    in the pictures below. These can be found at a lot of

    electronic places like Radio Shack. Best buy, circuit city

    and probably even Wall mart.
    I do not supply one because there is too many ways
    to connect this transmitter.
    Like for instance you own a Guitar and no amp.. use your stereo
    as an amp with this transmitter with the proper phone plug to
    RCA connector.

    Guaranteed for one year parts and labor.
    you ship it I will fix it for free.

    Shipment will be By USPS Priority mail.
    Payment $154.00 shipped by Paypal, If you do not have Paypal I will take other forms of payment.

    Thanks for looking
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