Yaesu FT-991 User Manual

Page 113FT-991 OperaTing Manual
WhAt iS the gM Function?
TheGM(groupmonitor)functionautomaticallyinquirestondifthereareanystationswiththeGMfunctioninopera-
tion on the same frequency within communication range.
The
FT-991
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 communications, the GM function is also a convenient method
to instantly note the relative positions of all the members in the group.
) 11
1
1
24 7
)1247
)
0'9
1247
)1247







᳂
᳂
᳂
᳂
#..
bASic MethodS to uSe the gM Function
There are two ways to use the GM function:
(1) Display all stations operating the GM function that are within communications range (maximum of 24 stations can
be displayed)
(2) Register the ID of partners into a memory group and then display only the Group Member partners
An explanation of the two methods of starting the GM operation is given on the following pages.
Refer to the separate Operating Manual GM Edition for additional details on using the GM Functions (download the
manual from our YAESU website).
usinG the GM function
Advice:
The GM function does not work in the analog FM mode.

Yaesu FT-991 Specifications

General

Frequency Range Transmit	1.8 MHz - 54 MHz, 144 MHz - 148 MHz, 430 MHz - 450 MHz
Antenna Impedance	50 Ohms
Antenna Connector	SO-239
Supply Voltage	13.8 V DC ±15%
Modes	SSB, CW, AM, FM, C4FM Digital
Display	3.5-inch color TFT LCD
Weight	4.3 kg