Heathkit SB-640 Remote Linear Master Oscillator / VFO

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External-/Remote-VFO for the Heathkit SB-101/Heathkit SB-102 transceivers, designed to permit split frequency operation.

Frequency range

RX-range
-
TX-range
-
HAM bands
-
Stability
≤ 100 Hz per hour after warmup
Tuning steps
-
Filters
-

Receiver

Modulations
All mode  
Sensitivity
-
Selectivity
-
Receiver system
-
IF-frequencies
-
Image rejection
-
Audio output
-

Transmitter

Modulations
All mode  
RF-Output
-

Connections

Antenna
Clamps / screws
Impedance
-

Electrical

Power requirements
External PSU or main unit
Current drain RX
-
TX
-

Physical

Dimensions (w×h×d)
254 × 171 × 279 mm (10.00 × 6.73 × 10.98 in)
Weight
2.30 kg (5.1 lbs)
Form factor
Base Station
Manufactured
Between 1967 and 1970 in USA
MPN

Other features

Memories
-
Usage
Amateur / Ham radio operators
Features + options
-
Accessories
-

Manuals, diagrams and brochures

Heathkit SB-640 Specifications submitted by RigReference
 
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