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General Radio Vintage 1931-A Amplitude Modulation AM Monitor Tube Halloween Prop
Estimated price for orientation: 799 $
Category: Vintage Pro Audio Equipment
Class:
Description Brand: General Radio Year: 1949 MPN: Does Not Apply Type: Test Equipment Model: 1931-A UPC: Does not apply
I picked this along with some other gear from a closed radio station last year. I don't have the power cord and have no way to test so it is being sold AS-IS. It appears to be in excellent condition and has all the components intact. It will make a great display piece in your collection. It can also be used as a Halloween or Frankenstein type prop.The Type 1931-A Amplitude Modulation Monitor is designed for monitoring the modulation percentage of AM transmitters. It gives (1) a continuous indication of either positive or negative modulation peaks, as selected by the panel switch, and (2) a visual indication of positive peaks in excess of a predetermined level which is set by means of a dial on the panel, and (3) an idication of the relative magnitude of any shift in average carrier amplitude which may occur during modulation.
Description
| Brand: | General Radio | Year: | 1949 |
| MPN: | Does Not Apply | Type: | Test Equipment |
| Model: | 1931-A | UPC: | Does not apply |
I picked this along with some other gear from a closed radio station last year. I don't have the power cord and have no way to test so it is being sold AS-IS. It appears to be in excellent condition and has all the components intact. It will make a great display piece in your collection. It can also be used as a Halloween or Frankenstein type prop.The Type 1931-A Amplitude Modulation Monitor is designed for monitoring the modulation percentage of AM transmitters. It gives (1) a continuous indication of either positive or negative modulation peaks, as selected by the panel switch, and (2) a visual indication of positive peaks in excess of a predetermined level which is set by means of a dial on the panel, and (3) an idication of the relative magnitude of any shift in average carrier amplitude which may occur during modulation.