Reducing CW click on your uBITx

Bob N1KW found that by simply increasing C1 to 2.2 uF (just parallel the existing 0.1 uF cap) the keying shape is greatly improved with about 3 ms attack and 6 ms decay. That is much better than the key click machine it was originally with about 0.5 ms attack and decay times.


Fan mod with temperature control

Rob AG5OV picked up a cheap temp fan relay from Amazon.

These are also available on Aliexpress for less than US$2.00.

Rob  superglued the probe to one of the heatsinks on the finals and then played with ON temp and hysteresis temp.  He settled on 50deg for turning ON the fan and 35deg for turning it OFF.   Rob says it works great.