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The RCA SC-88 (U.S. Army Signal Corps designation R-320/FRC).

The SC-88 is an extremely rare version of the AR-88F series of receivers and the first with a Band In Use dial mask. It was manufactured between 1949 and 1950 only and featured front panel Crystal Phasing Control and full coverage of .535-32 MHz.

General characteristics

HAM bands
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Frequency stability
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Tuning steps
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Receiver

RX-range
0.535-32 MHz (general coverage)
Modulations
AM   CW  
Sensitivity
For 20dB S/N: 8µV at 1MHz, 4.5µV at 4.3MHz, 7µV at 16MHz, 7µV at 28MHz
Selectivity
5 Settings: -3dB bandwidths 15kHz, 9kHz, 3.4kHz, 1.6kHz, 400Hz
Filters
?
Receiver system
Single conversion, 14 valves
IF-frequencies
455 kHz
Image rejection
120dB at 1MHz 60dB at 16MHz 46dB at 28MHz
Audio output
2.5 W (2.5 ohm external speaker or 600 ohm headphone)

Connections

Antenna
SO-239
Impedance
200Ω
Other
-

Electrical

Power requirements
100-260 VAC mains or 6V DC vibrator pack
Current drain RX
100VA
TX
-

Physical

Manufactured
Between 1949 and 1950 in USA
Dimensions (w×h×d)
488 × 280 × 488 mm (19.21 × 11.02 × 19.21 in)
Weight
45.00 kg (99.3 lbs)
Form factor
Base Station

Other features

Memories
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Usage
Amateur / Ham radio operators
Features + options
BFO, Main Tuning Dial, Veneir Tuning Dial, Tuning Lock, Antenna Trimmer, HF/TONE Adjustment, Crystal Phasing, Selectivity , RF GAIN, AF GAIN, Diversity IF GAIN, Noise Limiter, VC.
Accessories
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MPN
RCA-SC-000088

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