20FT-70DR/FT-70DE Operating Manual4. To check whether or not other stations are operating within communications range,press the [GM] key to turn the GM (Group Monitor) function ON.• The other stations also need to turn the GM (Group Monitor) function ON.• While operating with the GM (Group Monitor) function, “Operating Frequency”,“GROUP” and “DG-ID number” are shown repeatedly on the LCD.5. Press the [GM] key to turn the GM (Group Monitor) function OFF and return to the normal operation.z While setting the DG-ID number, pressing and holding the [HM/RV] key will set the transmitand the receive DG-ID numbers to “00”.z If the receive DG-ID is set to a number other than “00”, only signals with that DG-ID will bereceived. Normally, set the receive DG-ID number to “00” except when communication isdesired only with group members.z The transmit and receive DG-ID default number is set to “00”.Communicating only with the specific members by setting the DG-ID number except for “00”Example Set the DG-ID number of to “50”1. Press and hold the [MODE] key.• The DG-ID number setting screen appears and thetransmit DG-ID number “T00” blinks.• Rotate the DIAL knob to set the transmit DG-ID num-ber to “T50”.2. Press to the [MODE] key again to blink the receive DG-ID number “R00”.Rotate the DIAL knob to set the reception DG-ID num-ber to “R50”.3. Press and hold the [MODE] key or press the PTT switch to save the setting and re-turn to normal operation.Tuning to the same frequency and setting the same DG-ID for all the group memberswill enable communication between the members and exclude other signals.4. Press the [GM] key to turn the GM (Group Monitor) function ON and check whether ornot other stations that are operating on frequency, with the GM (Group Monitor) func-tion ON, and have the same GD-ID number setting, are in the communication range.• The other stations also need to turn the GM (Group Monitor) function ON.• During operating on the GM (Group Monitor) function, “Operating Frequency”,“GROUP” and “DG-ID number” are shown repeatedly on the LCD.5. Press the [GM] key to turn the GM (Group Monitor) function OFF and return to the normal operation.z While setting the DG-ID number, pressing and holding the [HM/RV] key will set the transmitand the receive DG-ID numbers to “00”.z If the receive DG-ID is set to a number other than “00”, only signals with that DG-ID will bereceived. Normally, set the receive DG-ID number to “00” except when communication isdesired only with group members.