| Note: This site and the data it contains have been reposted from an archive of Nolan Lee's original web site by Steve Johnson. |
Here's a general summary of the R-1051B Receiver:
Frequency Range : 2.0 to 29.9999 Mhz in 0.1 khz increments, or 2.0 to 30.0 Mhz with continuous vernier tuning between 1.0 khz increments.
Receiver Type : Superhetrodyne (triple conversion)
Frequency Stability : 1 part in 10 to the 8th power per day
Frequency Accuracy : plus or minus 0.5 Hz at 5 Mhz
Type of Frequency Control : crystal controlled synthesizer referenced to a 5 Mhz internal or external standard
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, 20 or 30 Mhz ; second, 2.85 Mhz ; third, 500 khz
Bandwidth : SSB, 3.2 khz ; AM and CW, 7 khz
Recommended antenna : 50 ohm impedance
Ambient temperature limitations : 0 to +50 degrees celcius
Power consumption : 55 watts
Primary power requirements : 115 VAC plus or minus 10%, single phase, at 48 to 450 hz
IF. rejection : -75 dB
Image rejection : -80 dB
Audio output : 60 mV (mininum) into 600 ohm balanced or unbalanced remote output loads (2) ; 15 mV (mininum) into 1200 ohm balanced load (local headsets) (2)
Weight : 70 lbs
Dimensions without mounting brackets or shockmount : 17 3/8 inches wide ; 7 inches high ; and 19 inches deep