B) ©) Dy CAUTION NOTE: Battery Installation Open the battery door with "+7 screwdriver, ms cit 1 po OV (6F22) or equivalent battery and close the door. Operas ie 1 crop hone (#10) at the bottom. » Select Talkie Talkie mode 3) Turn the HVLO/OFF switch (#3) for adjusting the sound level. 43 Press PTT button (#6) Tom transmitting, speaking clearly in a normal voice. 5 Release PTT button (#6) for receiving. &) While pushing PTT (#6) & CALL (#7) buttons together momentarily for transmitting secret code.