John -
Right - my keyer is also kit made. Dave Bowker has suggested
a sure way to measure the value of the pot, and a way to broaden
the control's range. Give him a shout for the info he will give you.
Don't quite understand Paul's answer, perhaps he didn't quite
follow what you were asking him. Follow Dave's advice, pull the pot
plug from the logic board and measure the pot's value. Probably in
the 10K range. A 5K 1/8 watt resistor across the outer ends of the
pot, or across a two wire system if used, should broaden the range
quite nicely. Worth a try.
Nothing to do with the immediaate problem, but here's what I did
with my keyer: Added a small board to my Superkeyer 3 to avoid the
iambic operation. I like squeeze keying and makes a lot less finger
work to produce CW. If you are interested I can send you the
schematic and a pix of the installed board inside the keyer chassis.
A simple job.
73 - Don
|