heres my old philippine made cobra 29 ...on the squelch knob is a variable talkback.you see the connex echo in the delta tune spot.the black button you see is the button for the keyup birdie.the 2 red buttons you see are for a custom 7 tone key and unkey roger beep.this lets me choose between 7 different tones and i can make them keyup sounds or unkey sounds or both at the same time .how trick is that?if a forum member wants one i can steer you in that direction since i have all i need now ..lol....so whatcha think of my custom cobra 29?