Yaesu FT-991A Instruction Manual - Page 3
Page 3
FT-991 I
nsTrucTIon
M
anual
(GM E
dITIon
)
W
haT
is
The
GM f
unCTion
?
The GM (group monitor) function monitors the set frequency to find if there are any stations operating with the GM
function within communication range.
The
FT-991A
can then display the position, distance and other information for each member call sign on the screen.
Besides identifying GM stations that are within the sphere of communications, the GM function is also a convenient
method to instantly note the relative positions of all the members.
:
6 4:
)
& +&
*
,
#
,
*
,
4
,
-
,
(
,
,
,
The call sign, the distance and the direction of up to
24 stations operating with the GM function ON, and
that are within the communication range, may be
tracked.
When DG-ID is set to “00”, all received C4FM digi
-
tal information will be displayed.
When the DG-ID is set to other than “00”, only
digital information on C4FM signals containing the
same DG-ID is displayed.
n
oTe
:
To utilize the GM function, all members must operate
on the same frequency.
a
dviCe
:
The GM function does not work in the analog FM mode.
u