I have the pro-164 and have tried both the ARC-300 software and the PSREdit300 software in demo versions, and they both do some really weird things with my air band frequencies. For example, I will put in 132.6 in am mode into PSRedit and then upload it to my scanner and it will be 132.5999. A similar thing happens with the ARC software, has anybody else noticed this or is it just me.