"The comment about jazz was a reference to tuning Instruments for playing jazz music... Doesn't need to be perfect.
I didnt know you could jam lte. If I were in your shoes i would investigate how that is possible; there may be something different…"

"CDMA radio technology (spread spectrum) hides a signal across the spectrum and should be immune to simple band jamming.  It is used in cell phones and stealth radar. You probably won't build this yourself but I suspect you can find something off the…"