The radio is unable to communicate with other members.

Analysis
1,TX/RX frequency of the repeater is inconsistent with that of portable/mobile radios.
2,The repeater failed to repeat useful signal due to strong interference signals.
3,The radio is out of the coverage of the repeater.

Solution
1,Check if the frequencies are consistent. Reset the frequencies when necessary.
2,If you cannot remove or bypass the interference source, change to operate at other frequencies.
3,Move into the coverage of the repeater.