Certainly not condoning it, but as long as you don't interfere with another user, you could get away with it. For the frequencies I'm using, the 3.4 GHz band i

Certainly not condoning it, but as long as you don't interfere with another user, you could get away with it. For the frequencies I'm using, the 3.4 GHz band is very lightly used by hams, so that won't be a problem. Plus wide band OFDM signals just sound like noise in a narrow band receiver. There are government/military radars, but only in certain geographic areas. 2305 MHz is a little different. The 2305 to 2310 segment is shared with band 30 LTE. Band 30 is pretty lightly used by AT&T (the only licensee), but they do use it in some cities. The 2300 to 2305 segment is interesting. Amateur radio is secondary, but there is no primary user. My guess is that it's kept this way to provide a guard band to the deep space band at 2290 to 2300 MHz. An alternative frequency would be 2395 MHz, but that's very close to the WiFi band. If you really want to be stealth, then 10 and 24 GHz would be ideal.