Thanks. I already have it reasonably well shielded, but there are of course many signals crossing the shield walls. There are things that could be done to shield the inductor better and I might be forced to do so, but I still would prefer to move...
I am working on a handheld receiver for the 80 m HAM band and specifically 3.5 to 3.6 MHz is of interest. The antenna is a ferrite core with a winding and as it is a handheld receiver, it is positioned just a few cm away from the Teensy Micromod...