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Kit radio from the 1970's. The internal NiCad battery is required for operation. As nearly none have survived to this day, some modifications may be required to get the radio going again.

General characteristics

HAM bands
160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m 
Frequency stability
?
Tuning steps
Continuous
Memories
None

Receiver

RX-range
200 kHz - 30 MHz
Modulations
AM   CW   SSB  
Sensitivity
?
Selectivity
?
Filters
?
Receiver system
Double conversion superheterodyne
IF-frequencies
1st: 455 kHz
2nd: 4034 kHz
Image rejection
?
Audio output
0.3 W

Connections

Antenna
Clamps / screws
Impedance
50/75Ω
Other
-

Electrical

Power requirements
Internal 9 V NiCad (trickle charged through 115 V DC)
Current drain RX
?
TX
-

Physical

Dimensions (w×h×d)
287 × 156 × 215 mm (11.30 × 6.14 × 8.46 in)
Weight
?
Form factor
Base Station
Manufactured
Between 1969 and 1976 in USA

Other features

Usage
Amateur / Ham radio operators
Features + options
-
Accessories
-
RigReference ID
5514
MPN
HEATHKIT-GR-000078

Manuals, diagrams and brochures

Heathkit GR-78 Schematic JPEG - 1.36 MB, submitted by Pancho Cheja
Heathkit GR-78 Assembly and Operation Manual PDF - 3.49 MB, submitted by Pancho Cheja
 
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