Which of the following could be the reason you are unable to access a repeater whose output you can hear?
AnswerCheck the transceiver offset, CTCSS tone, and DCS code; any of these can prevent access even when you can hear the repeater output.
Hearing a repeater’s output does not guarantee that your radio is transmitting the correct access information. A wrong offset, CTCSS tone, or DCS code can all keep the repeater from responding.