James & Scott

Thanks for your quick response!

I read through the thread you provided about this issue. I had missed it with my searches.

Just my luck that this "intermod" or birdie is right at the frequency most used in my case. Surface mount mods are beyond my abilities. So I may have to ...

My new G2 Ultra has a signal that wanders around the 4.020 to 4.450 MHz area, with no antenna connected. Or with one. Its present in both Thetis and piHPSDR. It interferes with the MARS frequencies in that area. Is this normal? Do others have this? Any Ideas on a remedy would be much appreciated ...