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Collins R-390A
General Coverage Communications Receiver |
Rating (1-5): HHHHH (5) |
Made In: United States 1954-1985 |
Voltages: 110/220 VAC 48-62 Hz |
Coverage: 500 - 32000 kHz |
Readout: Digital Mech. & Ana. Linear |
Modes: AM/CW/MCW |
Selectivity: 16/8/4/2/1/.1 kHz |
Circuit: Triple Conversion Superheterodyne. 26 Tubes.
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Physical: 19x10.5x17.25" 65 Lbs. 483x267x438mm 29.5 kg
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Features: Ό" Head. Jack S-Meter AF Line Meter Antenna Trimmer
RF Gain BFO Limiter AGC SLO/MED/FST
Dial Lock Rack Handles Line Out 600 ohm Calibrator 100 kHz
IF Out Jack Standby Dial Adjust |
Accessories: CV-591A & 1982 SSB Converters, CV-89/URA-8 AFSK Loop Converter |
New Price: $2500-35500 |
Used Price: $600-1800 |
Comments: Over 54,000 "A" models were made by Collins and many other
manufacturers including: Motorola, Stewart-Warner, Capehart, Amelco,
Teledyne, EAC, Fowler Ind., Dittmore-Freimuth and Helena Rubenstein (reportedly). Most, but
not all "A" production has mechanical filters and is therefore more desirable to
DXer's. Note the antenna trimmer knob directly above the frequency display (it is located above the Megacycle knob on the earlier non-A model). This robustly built receiver is still in use
worldwide. It has a hearty front-end, is unusually stable and accurate for a tube
receiver. The R-390's and R-390A's are often found missing meters which allegedly
gave off excessive radiation if meter case opened. |
Variants: The R-725Ή is a DF variant prototype by Motorola, made by Servo and Arvin
with an IF strip similar to the R-390's (< 300 produced). The R-1247/URR-GRC-129 is a high stability, remanufactured model used by the Apollo space program.
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Click here to view sold archive at Universal Radio. |
Collins R-391
General Coverage Communications Receiver |
Rating (1-5): HHHHH (5) |
Made In: United States |
Voltages: 110/220 VAC 48-62 Hz |
Coverage: 500 - 32000 kHz
|
Readout: Digital Mech. & Ana. Linear |
Modes: AM/CW/MCW |
Selectivity: 16/8/4/2/1/.1 kHz |
Circuit: Triple Conversion Superheterodyne. 33 Tubes. |
Physical: 19x10.5x17.25" 65 Lbs.
483x267x438mm 29.5 kg |
Features: Ό" Head. Jack S-Meter AF Line Meter Line Out 600 ohm
RF Gain BFO Limiter AGC SLO/MED/FST
Dial Lock Rack Handles IF Out Jack Calibrator 100 kHz
Squelch Channel Select Dial Adjust Antenna Trimmer |
Accessories: CV-1982/TSC26 SSB Converter, CV-89/URA-8 AFSK Loop Converter,
AM-4823/U HF Preselector, CV-157/URR SSB Converter |
New Price: |
Used Price: $600-1500 |
Comments: The model R-391 is similar to the R-390, but supports 8 autotune channels. This is
a mechanical preset scheme. In comparing the front panel to the R-390 you will note
one additional knob on the left side of the radio directly below the bandwidth knob.
This is for channel selection. A channel card will also be located on the front panel
directly above the odometer frequency display. |
Variants: The model R-391A (also referred to as the R-391(XC-2)), reached the prototype stage. Production units have not been confirmed. |
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