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Home :: Radios and Equipment :: R-1051B HF Communications Receiver

R-1051B HF Communications Receiver

R-1051B HF Communications Receiver
SKU 1649
Weight 35.00 Kg
Equipment Grade Grade 2-3
£375.00 (Approximately US$ 480.00)
From the mid 1960's through to the 1990's the R-1051 and its variants were the HF receiver of the choice for the U.S. NAVY. Easy to operate it was the work horses of every ships radio room. The receiver was used in all Navy ships from patrol boats through to carriers. With its amazing stability, it was tune and forget!

R-1051B Radio receiver, frequency range 2-30 MHz, 2-4 microvolt sensitivity, direct digital frequency synthesis, 0.1 KHz tuning increments, modes of operation USB, LSB, ISB, AM and FSK. Bandwidths: 3.1 and 6 KHz depending to operating mode. Operates from 115 VAC 48-450 Hz 55 Watt. Made in USA by General dynamics.

The R-1051B is a Triple conversion Superheterodyne HF receiver. Solid state construction except for two 6BZ6 tubes, which are used as the RF amplifiers in the front end delivering excellent performance and immunity to signal overload. The receiver is isolated against signal leakage to prevent enemy detection of the local oscillators.

The frequency selection is done by turning mechanical decade knobs. The Mhz stage is tuned by an internal motor. Frequency stability is 1X10-8 per day! The B model has a 100 Hz synthesizer which can be unlock for accurate tuning.

The receiver is supplied tested and operational Grade 2. Grade 3 Untested may also be available, please E-Mail for details.

R-1051B Receiver Specifications:
Frequency Range: 2.0 to 29.9999 MHz in 0.1 kHz increments
Receiver Type: Triple conversion Superheterodyne
Frequency Stability: 1 part in 10 to the 8th power per day
Frequency Accuracy: plus or minus 0.5 Hz at 5 MHz
Modes of Operation: LSB, USB, ISB, AM, CW, and FSK
Sensitivity: 1 uV for 10 dB (S + N / N) in SSB mode, 2 uV in CW and FSK modes, and 4 uV in AM mode
Receiver IF: First IF 20 or 30 MHz, second IF 2.85 MHz, third IF 500 KHz
IF Rejection: -75 dB
Image rejection: -80 dB
Bandwidth: SSB, 3.2 KHz, AM and CW, 7 KHz
Antenna: 50 ohm impedance
Power Consumption: 55 watts
Power Requirements: 115 VAC 48-450 Hz
Audio output: 60 mV (minimum) into 600 ohm balanced, two local headsets connections

Detailed Images

R-1051B HF Communications Receiver
R-1051B HF Communications Receiver