I actually set all 22 channels to narrowband except for the named repeater channels. I have one of the function buttons set to toggle the RF power from high to low. On channels 8-14 the button just beeps and stays at low power. I use the low power mode to save battery life and to talk to FRS radios.
I have a Kenwood TK-372G commercial radio programmed for all 22 channels and some repeaters with a Nagoya NA-701G antenna. The Kenwood TK-372G has dual part 90 and 95A type acceptance. This radio outputs 4 watts on high power and 1 watt on low power. The FCC limit for channels 8-14 is 0.5w and this radio does not go that low. Should I remove those channels or disable Tx on them or should I lock the Tx to 1 watt on those channels (which I have done).