I have those radios and they call each other just fine, but won’t call an older set of radios even if I have them on the same freq. If you look at the display on the old radios when the “call” button is pressed on the new ones, you can see the “receive” indicator come on, so it’s hearing the radio, but not doing anything. The two old radios will call the new ones and each other, I just can’t get the new ones to call the old.
Any suggestions?