Yeah, you aren't supposed to modify part 97 radios(ham) for 11m CB operation. You can listen, but not be able to transmit. Now truth be told, in a true emergency situation, knowing exactly how to unlock the 11m band may prove beneficial if you are setup for 10m operations already. Now on the flip side, if you can find a good unaltered 148 side mic, or the twin Uniden Grant side mic, those are considered some really decent ssb 11m radios.