Captain Obvious... LMAO....
APX uses Rodinia, right? I would assume its the same version as the 7550e?
Yep, totally agree with Mars. I own a AT-578 (that nobody wants to buy), two MD5 (which nobody wants to buy) and had two 878 (which I returned to Amazon back in the day, thank God!!) ... all of them suffer from intermod in the NOAA 162.550... in fact, all my non Motorola, Vertex radios suffer from the same issue, even the Kenwood TM-V71a, suffers from the same NOAA intermod. The Baoturds don't have intermod issues, well, that is b/c they have a -30 dBm loss in dynamic sensitivity, so, basically they are so deaf, that intermod is not a problem.
G.