AM Broadcast Transmitter with HD 12AU7 audio preamp Zenith Scott Fada or Crosley
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 5 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. Specifications Power 115-120 volts AC Power usage 9 watts Size. 6SA7 Frequency 700khz to 1050KHZ. Power in 1 volt peak audio power (headphone volume) Power input to oscillator tube 100mw RF power Audio. Antenna 15 foot of #20 wire Frequency drift +- 2 cycles after warm up.
5 meter 18' antenna wire. Attach the antenna and feed the wire out later after testing you can put up more wire to cover the whole house better. Plug in your RCA to mini patch cord into the transmitter and into your source of audio (headphone level) Use a headphone and make sure you actually have audio coming out of the source.
Set the transmitter volume control to just barely on for headphone volume audio devices. Plug unit into a 120 volt ac outlet. Turn on one of your radios and set frequency to 700 or 1050khz. Easy way is set your receiver to 700 to 1050khz and rock the tuning knob till you hear your music. Keep the Volume control on the transmitter low, around 12:00 seems to work well at that setting. The Volume control and volume of your source audio will have to be adjusted a little to get everything sounding good, make sure your receiving radio is loud enough then adjust your audio source so the distortion disappears. What happens is if the drive either from the source or volume control on the transmitter is too high it will over modulate and make the waveform not what it should be and comes out as distortion in the receiving radio, so lean towards keeping it low. Till you have it sounding good then crank it up slowly. The item "AM Broadcast Transmitter with HD 12AU7 audio preamp Zenith Scott Fada or Crosley" is in sale since Monday, September 04, 2017.This item is in the category "Collectibles\Radio, Phonograph, TV, Phone\Radios\Tube Radios\1930-49". The seller is "richsonic" and is located in Las Vegas, Nevada. This item can be shipped worldwide.