Using The Gm Function; What Is The Gm Function - Yaesu FTM-400DR Operating Manual

What is the GM Function?
The GM (group monitor) function automatically checks to find if there are any stations with
the GM function in operation on the same frequency within communication range.
The FTM-400DR/DE can then display the position and distance and other information for
each group member call sign on the screen.
Besides letting you know who is within your sphere of communication, this function is also
convenient for instantly checking the relative positions of all the members in the group
Furthermore, this function can also be used to send data such as messages and images
among the group members.
Tips
• The GM function operates only on Band A.
• The GM function does not work in the analog mode. When the GM function is activated, Band A will
automatically switch to the DN mode.
• When sending image data with the GM function in operation, the mode will automatically switch to
the FR mode (high speed data communication mode). At the end of the data transmission, the mode
will automatically revert to the original V/D mode (simultaneous voice/data communication mode).
Using the GM Function
99 99