Originally Posted by advcomp2019
Saratoga, there are radio equipment that have ICs that is modable. Like the Icom 706, there is a mod to extend what it receive. Here is the mod
if you want to see.
First sentence of that link says the IC is designed for the range of frequencies the mod enables. I'm not doubting that you can take an IC made for a given frequency range and use it in that range. Obviously this is possible. In the most extreme case you could just desolder it and hook it up to a better designed circuit.
The issue here is that the IC is apparently not rated to work above 108MHz, and although I haven't studied the manual in enough detail to say that it doesn't secretly allow higher frequencies with the right firmware patch, I do think that its not possible to somehow physically mod it to tune a wider band.