That method works fine for unencrypted TGs, but the problem I am having is that, on encrypted TGs, the radio doesn't stay on the TG long enough for me to hit the L/O button. It just lets out a loud (annoying) chirp, then immediately continues in search mode before I can push any buttons (although it stays there just long enough for me to read the TGID). I have the system delay set at 5 sec, which works for unencrypted TGs, but seems to have no effect on the encrypted ones. So, like the OP, I was hoping to be able to lockout those TGs manually, but haven't found a way to do that. Is there another solution that anyone knows of?