Ken Harker WM5R
1998 Super CMOS Keyer III Construction


This is a Super CMOS Keyer III I built in the summer of 1998. I built it specifically for the VHF station at the University of Texas Amateur Radio Club station N5XU.

These photos are copyright © 1998-2003 Kenneth E. Harker. All rights reserved.


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An out-of-focus shot of the PC board for the electronic Morse code keyer project I built this summer.
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An out-of-focus shot of the PC board for the electronic Morse code keyer project I built this summer.
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Removing buttons from an old PC keyboard to use in the Morse code keyer.
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Wires wires everywhere! At this point, everything looks like it was ready to be put together.
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The new Morse code keyer I built this summer is the thing in the middle with the six buttons and big knob on top of it.
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Another shot a little further back and better in focus.
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This is a circuit I wired up based on a design sent to me by Dale KG5U. it implements a PTT line, with adjustable delay, while code is being sent by the keyer.
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Here is an out-of-focus shot of the circuit added to the keyer. It is the small mustard yellow PCB in the bottom left of the keyer.
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This photo was taken from further back, and is a little bit better in focus.

Last Updated 14 April 2016
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