Hi Rich, If you haven't already figured out how to set up your MicroMobile for repeater access, you have to enable the repeater channels in the menu. By default the radio runs channels 1-7 and 15-22 all as simplex. Press and hold the MENU button for 3 seconds to enter the main menu, scroll through the menu until you find RP, using the channel selector knob select RP ON, next press SELLECT then SCN/MON to exit the menu. At this point if you turn the channel knob you'll see channels 1-7, 15-22, and RP15-RP22. RP15-RP22 are your repeater channels with the fixed +5 MHz offset. Unfortunately as mentioned above, the MicroMobiles only allow full CTCSS operation for tones so when you select a tone to access the repeater that's also your receive tone. Dave WRBP557/KB3CJT