I have an older 14 channel MPH, I understood I could double the channels but the high/low switch would become the channel bank selector and tuning to the ham band needed the 'ham and eggs' software conversion. The main reason I didn't do this is opening up the case there is the normal data ribbon cable, which after 15 years I was told this may be very brittle and is best left alone. There is a place in Calif that does the upgrades and conversions and his advice is probably the best on this. Can't think of the name of the company but I want to say it's in Chico or No. Cal somewhere. I would wait and look for a 210 channel model esp if it does narrowband and goes from 136 to 160? for govt, forestry.
