Don -
Further investigation shows that all three wires - brown, white, red - go to
connector D on the logic board.
I put a 4.7K resistor between the brown and purple wires. It made no change in
the keyer speed. The range remained 10-61 wpm. Also tried it between the white
and the brown and between the white and the purple. Again, no change.
Wonder what I'm missing?
A 10-turn pot may be too long for the space - about 1 1/8" behind the panel.
73 de K1ESE
John
VE1BN wrote:
John -
Try a 5K 1/8 Watt resistor across the two outer lugs on the pot
itself. This should stretch the range of the knob.
Another and better way is to just use a 10-turn 10K pot. Just
substitute it for the original. It won't disturb the resistor value
with an added parallel resistor across the outer lugs will.
I have a Bourns 10-turn and from the wiring indication on it, you
should be able to rewire it the same as the original panel pot.
Hope this helps you.
73 - Don
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