On Friday, August 19, 2016 at 8:36:44 AM UTC-5, wrote:
My "new" glider has a Terra 720 com. As i understand it, the channels have a 25khz spacing. But, it doesn't seem to transmit/receive on 123.075 (a perfectly fine channel w 25khz spacing), but is fine on 123.3.

Thoughts? (I know, i know... Buy a new com).

I am assuming there is a reason 123.075 is important to you. I would assume you have checked to see that it is the .075 that isn't working? If that selector hadn't been used much, it could have light corrosion on it. Might try cycling it back and forth a number of times and see if it gets better. Last I had seen, Texas State Technical College was handling repairs.

Good Luck!

Steve Leonard