Heathkit HW-7 Desktop Shortwave Transceiver

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The Heathkit HW-7 was the first QRP transceiver offered by Heathkit. It was available from 1972 through 1975. The HW-7 provided coverage of 40, 20, 15 meter bands. The transceiver featured a very simple direct-conversion receiver design and this simple design led to performance problems including sometimes-severe broadcast-band interference, microphonics, and AC hum. According to the January, ARRL review (January, 1973), the original price of the HW-7 was about USD 70.

Frequency range

RX-range
15/20/40 m
TX-range
15/20/40 m
HAM bands
-
Stability
less than 100 Hz drift after 10 minutes warmup
Tuning steps
-
Filters
-

Receiver

Modulations
CW   SSB  
Sensitivity
less than 1 µV provides readable signal
Selectivity
2 kHz (-6 dB)
Receiver system
Direct conversion
IF-frequencies
-
Image rejection
-
Audio output
-

Transmitter

Modulations
CW  
RF-Output
40m: 3 W, 20m: 2.5 W, 15m: 2 W

Connections

Antenna
BNC
Impedance
50Ω

Electrical

Power requirements
13V DC
Current drain RX
35 mA
TX
450 mA max

Physical

Dimensions (w×h×d)
235 × 216 × 108 mm (9.25 × 8.50 × 4.25 in) including protrusions
Weight
2.04 kg (4.5 lbs)
Form factor
Base Station
Manufactured
Between 1972 and 1975 in USA
MPN

Other features

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

Manuals, diagrams and brochures

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