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Amplifiers22 of 23ADMIRAL ULTRASONIC TUNING AMPLIFIER1956 Pilot AA-903 Mono Integrated Amplifier. Complete
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    Posted 13 years ago

    scrappingm…
    (1 item)

    I just found this tonite has switches to turn on, (alarm on/off, operate,calibrate), (sensitivity, quiet, med, high), and (volume, low, med, high). Name plate says
    amplifier,audio frequency am-1415/uns-1
    Stock no. 1790-050140506 serial no.5550
    Part no. 90E1021-501 contract AF 30 (635) -4477
    Mfg. By harvey-wells electronics, inc. Southbridge, mass.
    Please let me know if you know what this is and maybe even what its worth if you can thank you very much.
    Tom

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