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SCR-211-P Frequency Meter Set (BC-221-P)

Image ID = 541051 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set
 
Image ID = 541053 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set
Image ID = 720036 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set Image ID = 720039 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set
Image ID = 720037 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set Image ID = 720038 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set
Image ID = 720040 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set Image ID = 723171 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set
Image ID = 720036 for Zenith Radio Corp.; SCR-211-P Frequency Meter Set
Zenith Radio Corp.;: SCR-211-P Frequency Meter Set [Equipment] ID = 720036 900x675
Zenith model BC-221P Ebay seller southbayglobal.
 
Country: United States of America (USA) Manufacturer/Brand: Zenith Radio Corp.; Chicago, Illinois
Year: 1942 ?? Type: Service- or Lab Equipment
Valves / Tubes 3: VT-116B VT-167 VT-116
Principle not available
Wave bands Wave Bands given in the notes.
Power type and voltage Dry Batteries / 135/6 Volt
Loudspeaker/pwr.out - Earphone
from Radiomuseum.org Model: SCR-211-P Frequency Meter Set [ ]
Material Metal case
Shape Portable, e.g. Portable Radio (with or without mains > 8 inch).
Dimensions (WHD) 10 x 13.7 x 9.25 inch / 254 x 348 x 235 mm
Notes 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 cabinet. Required six BA-2 batteries (22.5V each), four BA-23 batteries (1.5V each) and P-18 or P-20 headset. Tube VT-116-B sometimes substituted for VT-116. Electrically and mechanically exactly alike model BC-221-T and very similar to models BC-221-AF and -AH.

This model was suggested by Emilio Ciardiello.

All listed radios etc. from Zenith Radio Corp.; Chicago, Illinois
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