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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.

General characteristics

HAM bands
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Frequency stability
less than 100 Hz drift after 10 minutes warmup
Tuning steps
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Receiver

RX-range
15/20/40 m
Modulations
CW   SSB  
Sensitivity
less than 1 µV provides readable signal
Selectivity
2 kHz (-6 dB)
Filters
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Receiver system
Direct conversion
IF-frequencies
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Image rejection
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Audio output
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Transmitter

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

Connections

Antenna
BNC
Impedance
50Ω
Other
-

Electrical

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

Physical

Manufactured
Between 1972 and 1975 in USA
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

Other features

Memories
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Usage
Amateur / Ham radio operators
Features + options
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Accessories
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MPN
HEATHKIT-HW-000007

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