Hope this is an appropriate topic for the board.
Just built he QRP Guys Multi Z tuner and hooked it up to the Ubitx. The Ubitx goes straight into TX on power up. I was very careful in building the tuner and don't think I made any errors.
The antenna is a horizontal loop cut a bit over 40 meters and fed with ladder line.
The Ubitx behaves normally when using a dummy load or with loop hooked up for receive.
No balun is currently attached.
Any ideas as to what's happening?