It’s for one simple reason. It may not be the reason you think.
https://www.buytwowayradios.com/blog/2021/03/why-mobile-gmrs-radios-dont-transmit-on-channels-8-14.html
Thoughts?
12.5 kc away from a repeater input on each side one half watt is ok , but full power radios would disrupt repeater ops .
I think there should be empty spaces around repeater inputs.
Allowing half watt ops 12.5 kc away from inputs doesn’t take into account the fact that most ppl are going to cheat using frequency agile devices from other services
They (fcc) need to take real world (reality) into account when they do channel planning. This includes their inabilities to enforce as well as ppls tendency to cheat