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Racal RA17

RA17
General Coverage Communications Receiver Rating (1-5): HHHHH (5)
Made In: England 1957-1962 Voltages: 100-125/200-250 VAC 45-65 Hz 85W
Coverage: 980 - 30000 kHz Readout: Analog
Modes: AM/CW Selectivity: 8/3/1.2/.75/.3/.1 kHz-6dB
Circuit: Triple Conversion Superheterodyne. 23 Tubes. Physical: 20.5x12x21.875" 96 Lbs. 520x305x556mm 44 kg
Features: " Head. (2) S/AF Meter RF Gain Calibrator 100 kHz. Rack Handles IF Output BFO 8 kHz Atten. -10/20/30/40dB AVC SLOW/FAST Dial Lock Rack Handles IF Output Mute Speaker 2.5" Speaker Switch Antenna Trimmer Standby NL
Accessories: RA37 LF Converter RA63 SSB Adapter RA66 Panoramic Display RA98 ISB Adapter RA137 LF Conv. (late)
New Price: $1200-2400 Used Price: $450-600
Comments: Ranges: 1-2, 2-4, 4-8, 8-16 and 16-30 MHz. The left tuning knob is for kHz and the right tuning knob is for MHz. The kHz dial is a 6 foot 35mm film scale yielding very high accuracy +5 kHz). Stability improved in later production. First communications receiver to use the famous Wadley loop drift cancelling system. 4 Filters are L-C, 2 are crystal. Heavy duty cast aluminium chassis. Light battleship gray. Over 10,000 RA17s were reportedly made. The RA137 covers 10-980 kHz.
Variants: American versions RA17C, RA17C-2 have slightly different tubes and antenna connections. RA17C-3 AN/URR-501, RA17C-12 AN/URR-501A U.S. version. Model RA17L later production with bandwidths of: 13/6.5/3/1.2/.3/.1 kHz.

Racal RA117

RA117
General Coverage Communications Receiver Rating (1-5): HHHH (4)
Made In: England Voltages: 110-125/200-250 VAC
Coverage: 1000 - 30000 kHz Readout: Analog Lin.
Modes: AM/CW Selectivity: 13/6.5/3/1./.3/.1 kHz-6dB
Circuit: Triple Conversion Superheterodyne. 23 Tubes. Physical: 20.5x12x21.875" 92 Lbs. 520x305x556mm 42 kg
Circuit Complement: 6AK5W Crystal Osc., 6AK5W Harmonic Gen., 6ES8 RF Amp, 6AS6 Harmonic Mix, 6BA6 1st VFO, 6BA6 37.5 MHz Amp, 6688 1st Mix, 6BA6 37.5 MHz Amp, 6688 2nd Mix, 6BA6 37.5 MHz Amp, 6AK5W 2nd VFO Amp, 12AT7 2nd VFO, 6BE6W Calibrator, 6BA6 1st IF Amp, 6BA6 Calibrator, 6BA6 2nd IF Amp, 6BA6 IF Output, 6AL5 AVC, 6AK5W BFO, 6AL5 Noise Det, 6AQ5 Audio Out, 12AT7 AF Output, 6688 3rd Mixer, 6BE6W 4th Mixer and 6AK5W 1.7 MHz Crystal Osc.
Features: " Head. Jack (2) S & AF Meter RF Gain Calibrator 100 kHz. Rack Handles Mute Line BFO 8 kHz AVC Short/Long RF 2-3 MHz In Attenuator Rack Handles Dial Lock NL Speaker 2.5" IF Out 100 kHz 1 MHz I/O Line Out 600 ohm
Accessories: RA237 LF Converter (10-980 kHz). RA298 SSB/ISB Option
New Price: Used Price: $370-550
Comments: Ranges: 1-2, 2-4, 4-8, 8-16 and 16-30 MHz. The left tuning knob is for MHz and the right tuning knob is for kHz. The kHz dial is a film scale yielding very high accuracy. Light battleship gray. This model was designed for the U.S. market.
Variants: Model RA6117A is the American version manufactured in the U.S.A.

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