Dynamic
transmission
power
The
system
can
automatically
choose
the
power
level
most
suitable
for
the
situation
at
hand.
For
instance,
if
you
fly
close
to
the
transmitter
you
normally
only
require
minimal
TX
power
and
the
system
will
therefore
switch
to
lowest
possible
TX
power
level
required
to
maintain
a
good
up-link.
The
maximum
TX
power
level
the
system
is
allowed
to
use,
can
be
defined
by
changing
“Max
Power”
in
the
configuration
menu.
To
enable
dynamic
power:
1. Enter
the
configuration
menu,
select
“General”
and
“Dyn.
Power”
2. Toggle
“Off”
to
“On”
by
pressing
Down,
exit
the
menu
to
apply
the
change
3. The
current
dynamic
TX
power
level
is
displayed
in
the
main
display
(standard
TX)
Transmission
frequency
CC
Wikipedia
The
TBS
CROSSFIRE
supports
two
different
frequency
bands,
depending
on
your
local
regulation.
The
frequency
is
locked
to
your
locale
when
you
upgrade
the
firmware,
but
can
be
changed
in
TBS
AGENT.
Below
is
a
general
overview
of
the
primary
frequency
segmentation.
General
area
Frequency
ITU
Region
1
-
Europe/Africa/Middle
East
(yellow)
868
MHz
SRD
band
ITU
Region
2
-
America/Greenland
(blue)
915
MHz
ISM
band
ITU
Region
3
-
Asia/Oceania
(purple)
915
MHz
ISM
band
To
change
frequency
band:
1. Power
up
both
the
transmitter
and
receiver
2. Enter
the
configuration
menu,
select
“General”
and
“Frequency”
3. Pick
the
either
868MHz
or
915Mhz
depending
on
your
locale
The
frequency
change
is
instant,
and
affects
transmitter
and
receiver.
It
can
even
be
changed
in-flight
if
necessary.
32