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Remote Linear Master Oscillator / VFO
Speech processor
External Speaker Console

General

HAM bands ? ? None 
Freq. stability ≤ 100 Hz per hour after warmup ? -
Tuning steps ? ? -

Receiver

RX-range 5.0-5.5 MHz ? -
Modulations All mode   - -
Sensitivity ? ? -
Selectivity ? ? -
Filters ? ? -
Receiver system ? ? -
IF-freqs. ? ? -
Image rejection ? ? -
Audio output ? ? ?

Transmitter

TX-range ? ? -
Modulations All mode   - -
RF-output ? ? -

Connections

Antenna Clamps / screws - Proprietary
Impedance ? ?
Other - - Headphones

Electrical

Power req. Transceiver unit (11 + 13.6 V DC) ? Mains
Current RX - ? ?
TX ? ? ?

Physical

Manufactured Between 1978 and 198x in USA Between 19xx and 19xx Between 196x and 19xx in USA
Dimensions 352 × 251 × 181 mm
(13.86 × 9.88 × 7.13 in)
? ?
Weight 2.95 kg (6.5 lbs) ? ?
Form factor Base Station Base Station Base Station

Other features

Memories ? ? None
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? ? -
Accessories ? ? -
MPN HEATHKIT-SB-000644A KEN PRODUCT-KP-000060 GALAXY-SC000550