The HW-9 is a multi-band CW transceiver covering the 80, 40, 20, 15 meter bands (with the addition of the HWA-9 add on, it covers 30, 17, 12 and 10 meters). It has proved to be very successful with QRPers world wide.

Whereas the two previous Heathkit transceivers, the HW 7 and HW8 were direct conversion, the HW9 is a superhet.

It first appeared in the 1980s.

Size:

• 4.25" H
• 9.25" W
• 8.5" D

Weight:

• 4.7lb

Frequency Coverage:

• 3.5 - 3.75 MHz
• 7.0 - 7.25 MHz
• 14.0 - 14.25 MHz
• 21.0 - 21.25 MHz

With HWA-9 add:

• 10.0 - 10.25 MHz
• 18.0 - 18.24 MHz
• 24.75 - 25.0 MHz
• 28.0 - 28.25 MHz

Transmitter:

• 4W
• Harmonic supression 35dB minimum
• Spur supression 40dB minimum
• Less than 150Hz/hr drift after 30 minutes warmup

Receiver:

• 8.83MHz IF
• Doubly-balanced mixer front end; no RF amplification AGC
• 0.5 microvolt sensitivity for 10dB S/N
• Noise floor (MDS): -130dBm / -128dBm (80m / 20m)
• Blocking dynamic range: 124dB / 122dB
• Two-tone 3rd order IMD DR: 99dB / 88dB
• Third order intercept: 18.5dBm / 4dBm

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The above picture is reproduced with the kind permission of Steve Hideg (copyright 1995) and may not be used for any reason without his permission.Steve.Hideg.1@nd.edu

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