Alan HP106 - 6.4.b Setting the PTT lock

HP106/HP406 Programmer software guide
Ver. 1.0 Page 22
6.4.b Setting the PTT lock
3) You have now three choices to lock the PTT in certain conditions:
 If you don’t want to lock the PTT, even when the channel is busy or the correct CTCSS tone is present, leave the NO PTT Lock
radio button active.
 If you need the Tx inhibited when a carrier is detected (busy channels), use the PTT
lock if CARRIER radio button.
 If you need the Tx inhibited when the correct CTCSS tone is detected, use the PTT lock
if correct CTCSS radio button.
 If you need the Tx inhibited when a wrong CTCSS tone is detected, use the Lock on CTCSS wrong radio button.
4) Click the OK button to confirm or Cancel to exit without changing the previous settings.