WW2 U. S. Army Signal Corps Frequency Meter BC-221-B w/PS For Sale
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WW2 U. S. Army Signal Corps Frequency Meter BC-221-B w/PS:
Vintage WWII Frequency Calibrator
Precision heterodyne frequency meter designed to measure or radiate radio-frequency impulses between 125 kHz and 20 MHz. Portable, self-contained, used mainly to calibrate field radio receivers and transmitters by direct comparison with the crystal-calibrated variable frequency oscillator of the instrument. Frequency readings provided by a calibration book. Contained 1 MHz crystal oscillator and variable frequency oscillator operating in two switched ranges: 125 to 250 kHz and 2 to 4 MHz. The 2nd, 4th and 8th harmonics of the low-frequency range were used to cover 250 kHz to 2 MHz, while the 2nd, 4th and 5th harmonics of the high-frequency range were used to cover 4 MHz to 20 MHz. Supplied with aluminum-alloy metal cabinet. Dimensions and Weight are shown for a metal cabinet model. Headset (non-military) included.
This unit has been modified with an internal Solid State Power Supply, and 1 of the audio jacks replaced with a panel light (see pix)
Calibration has been verified as within original specs, and unit functions as designed.
Dimensions (WHD) 10 x 13.7 x 9.25 inch
Weight 45 lbs
Shipping cost IS ONLY AN ESTIMATE !!!! Actual cost will be computed at end of sale, and the appropriate charge invoice to you, NO HANDLING CHARGES, ACTUAL SHIPPING COST ONLY. Local pickup is obviously free !
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