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RCA AR88D

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Desktop Shortwave receiver

These hugely heavy and incredibly sensitive sets were, rumour has it, produced for Lend-Lease agreements with England for service in World War II. They are quite common in the UK but scarce in the US. There appear to be two 'flavours' of AR88 - the 'D' version has a frequency coverage as per above whilst the 'LF' version goes down all the way to 75kHz.

The receiver consists of two RF stages, a mixer, local oscillator, three IF stages, a detector, noise limiter, BFO, AF amplifier, output stage and power supply system. The IF amplifiers incorporate variable selectivity and a crystal filter. The sets are normally housed in steel cases but can be rack mounted.

The receivers are designed for coupling to a 200 ohm transmission line, except on low frequency general broadcast bands. For these and general use a single wire 25 to 50 ft. long can be used.

The Reception set AR88D was originally manufactured as the Reception set AR88. It still bears this name on the front panel. The change in designation occurred between the serial numbers 003000 and 010000 and coincides with a change in the design of the output transformer to provide a 600 ohm balanced line output and a 20,000 ohm headphone output. The original AR88 featured a 20 ohm headphone output.

Specifications
Type
Desktop Amateur HF Receiver 
Frequency range RX
0.535-32 MHz in six bands 
TX
Frequency stability
Tuning steps
Filters
Receiver
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 
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) 
Transmitter
Modulations
RF-output
Connections
Antenna
Impedance
200Ω 
Electrical
Power requirements
100-260 VAC mains or 6V DC vibrator pack 
Current drain RX
100VA 
TX
Physical
Dimensions (w×h×d)
488 × 280 × 488 mm (19.21 × 11.02 × 19.21 in)  
Weight
45 kg (99.3 lbs)  
Form factor
Desktop 
Manufactured
Between 1940 and 1945 in USA 
Other features
Memories
Usage
Amateur / Ham radio operators 
Manufacturer
RCA 
Model
AR88D
Features
Optional S-meter 
Manuals, Diagrams and Brochures
 
None available  
 
 
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