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Desktop Shortwave receiver
Mobile Shortwave receiver
Desktop Transceiver

General

HAM bands 80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m  ? 11m (CB) 
Freq. stability ? ? ?
Tuning steps Continuous ? Channelized

Receiver

RX-range 2-32 MHz 1-20 MHz in 5 bands 26.965-27.255 MHz
Modulations AM   CW   AM   FM   CW   AM  
Sensitivity ? ? 0.4 µV for 10 dB S/N
Selectivity ? ? 7 kHz @ -6 dB
21 kHz @ -60 dB
Filters ? ? ?
Receiver system Single conversion, 29 valves Superhet with RF-stage Crystal controlled single conversion superheterodyne
IF-freqs. 455 kHz 460 kHz 455 kHz
Image rejection ? ? ?
Audio output ? 0.05 W 3 W

Transmitter

TX-range - - 26.965-27.255 MHz
Modulations - - AM  
RF-output ? ? 2.8 W

Connections

Antenna - Proprietary (military) -
Impedance ? 50Ω 50Ω
Other - - -

Electrical

Power req. ? 12 / 24 V DC, 110 / 120 V AC depending on version Mains
Current RX ? ? ?
TX - - ?

Physical

Manufactured Between 195x and 196x in USA Between 1951 and 197x Between 195x and 196x in USA
Dimensions ? 310 × 215 × 230 mm
(12.20 × 8.46 × 9.06 in)
143 × 178 × 290 mm
(5.63 × 7.01 × 11.42 in)
Weight ? 10.50 kg (23.2 lbs) 5.40 kg (11.9 lbs)
Form factor Base Station Mobile Base Station

Other features

Memories None ? 10 channels in 1 bank(s)
Usage Military communication Military communication Citizen Band (27Mc)
Features ? ? ?
Accessories ? ? ?
MPN RCA-SRR-000013A MILITARY-R000209 E.F.-JOHNSON-MESSENGER-II