The General Electric XT-1-A AM transmitter


Posted on Feb 4, 2014

Back in the day when AM was king, no expense was spared on transmitting equipment. I remember the GE BTA-25 transmitter from the same era, it was build like a tank. Once, while we were repairing the Harris MW-50A main transmitter, the old GE burped, sputtered and threw an IPA overload, then returned to air. I looked in the IPA cabinet and found a mica capacitor had been blown in half.


The General Electric XT-1-A AM transmitter
Click here to download the full size of the above Circuit.

It was in the tuning circuit, but apparently there was still enough capacitance in the circuit for the transmitter to keep running. Like other 1 KW AM transmitter designs, this unit uses the venerable 833A triode. There are some advantages of this tube, as extra circuits for PA stage neutralization are not needed. The full sales brochure can be found here (medium sized. pdf). These were manufactured in Syracuse, NY.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Digital Volume Control
    The Simplest Car Battery Charger
    Battery Current Sensor
    Tandem dimmer
    Sequential timer
    Full Bathtub Indicator
    High Voltage AC Calibrator Circuit Using Op Amp
    DIY ECC802S (12AU7 / ECC82) Vacuum Tube SRPP Preamplifier
    Filter Choke Analyzer
    Op Amp 741 Inverting Amplifier Circuit Simulation with output wave form and working
    Seismic detectors
    30 Watt Audio Power Amplifier Schematic
    Automatic Switch Project
    Intelligent ultrasonic ranging ASIC SB5227 peripheral circuit design



    Top