R-390A/URR
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The receiver is a general purpose receiver for use in both fixed and mobile applications. the receiver provides reception of continuous wave (CW) , modulated-continuous wave (MCW), amplitude modulated (AM) frequency shift keyed (FSK) and single sideband (SSB) signals.
Technical Details
- Frequency Range
- 0.5 to 32 mHz
- Type of Signals Received
- CS, MCS, Voice, SSB, FSK
- Type of Tuning
- Continuous; frequency read directly on counter type indicator.
- Method of Calibration
- Built in Crystal-controlled
- Calibration Points
- Every 100 kHz
- Power Source
- 115 or 230 Volts AC +-10%
- Power Output
- 250 Watts Total; 140 watts with OVENS switch turned to OFF
Images
the rf subchassis removed for maintenance, bottom view
the rf subchassis removed for maintenance, top view
the rf subchassis removed for maintenance, front view
Additional Files
- Radio Receiver R-390A/URR Dept. of the Army Jan.20, 1956
- Operator’s Manual
- Radio Receiver R-390A/URR
- Organizational Maintenance Manual
- Radio Receiver R-390A/URR
- 10 February 1961
The 21st Century R-390A/URR Technical Reference
- A Collection of wisdom for enthusiasts
- Radio Receiver R-390A/URR
- 29 May 2000