Yaesu FT-51R Owner's Manual page 70

Refer to the table on page 24 for power levels
with respect to battery voltage.
The Tx Save feature is not enabled from the fac-
tory but can be turned on as follows:
then use the
Press
Press &or
f (default).
Press the to return the display to normal.
PTT
Notice that appears during transmission
when the Tx Save function is on (however, if the
ABS function is also enabled, it blinks during
receive and stays solid during Tx- you will have
to manually verify if Tx Save also enabled).
Another tip to consider is that if you live in a
location where high power is almost always
needed, consider using a higher gain antenna
instead of opting for high power (the effect on
transmissions the same). Make sure any exter-
nal antenna is designed for 50 ohms impedance
at the operating frequencies of each band.
to select
DIAL
to toggle Save
Beeper Disable
The keypad beeper draws several milliam-
peres, so you may want to disable it if you need
to conserve power while using the keys a lot. Do
this by pressing (OM)--)&
to select
toggle the beeper
or
to return to normal operation.
PTT
Selective Calling
Obviously, if the channel is quiet, the squelch
does not open often, and power drain is mini-
mized (particularly if the Battery Saver is active).
Unfortunately, you probably cannot always con-
fine your activity to quiet frequencies. The
DTMF selective calling (code squelch, and
DTMF paging) features in the FT-51R can be
used to essentially make a quiet channel out of
an otherwise busy one. When either of these
features is active, the squelch only opens (and
the
VHF & UHF
prefixed by a 3-digit DTMF code that matches
one you have stored in the DTMF Code Memo-
ries (see page 46). This can extend battery life
considerably.
In cases where you may need to monitor
many stations, or some that are not equipped
then using theJ!AL
Press &or
(default) or Press the
LEDs light) when a signal is