Battery Life Information; Ac Operation Using Nc-72; Interface Of Packet Tncs - Yaesu VX-5R Operating Manual

Installation of Accessories
BATTERY LIFE INFORMATION
When the battery charge is almost depleted, a "Low Voltage" indicator will appear on the
display. When this icon appears, it is recommended that you charge the battery soon .
(1) TX 6 sec ., RX 6 sec. and Squelched 48 sec.
(2) Continuous signal reception
The current battery voltage can be displayed manually on the LCD, by following the in-
structions on page 35 .
Battery capacity may be reduced during extremely cold weather operation . Keeping the
radio inside your parka may help preserve the full charge capacity.
AC OPERATION USING NC-72B/CIFIU (RECEIVING ONLY
The
VX-5R
may be operated from your house current by use of the supplied NC-72B/C/F/
U Battery Charger.
To use the
NC-72B/C/F/U,
turn the transceiver off, then plug the miniature connector of
the Battery Charger into the
EXT DC
jack on the side of the radio. Now plug the Battery
Charger into the wall outlet . You may now turn on the transceiver .
Important Notice
When using an external DC power source supplied via the E-DC-5B
or E-DC-6,
if
power is momentarily interrupted a safety feature will be activated inside the VX-
5R,
so as to minimize the possibility of damage to the microprocessor . Such a
power interruption might occur when a vehicle's ignition is turned on or off, or if the
DC power cable is unplugged, or if the DC power supply is turned off.
In the event of such a momentary power interruption, the
VX-5R
will return to the
original VFO or Memory Channel to which the VX-5R was tuned when it wasfirst
turned on during this operating session. For example, if you started operation on
Memory Channel 2, at 145 .400 MHz, but DC power input is interrupted later while
you are on Memory Channel 25, The
VX-5R
will revert to Memory Channel 2
(145 .400 MHz) when the power situation stabilizes .
This is a (normal) protection feature, and you may quickly return to Menory Chan-
nel 25 by pressing
a)-i
s®--ra
MR .
VX-SR OPERATING MANUAL
Interface of Packet TNCs
The
VX-5R
may be used for Packet operation, using
the optional CT-44 microphone
adapter (available from your
Yaesu dealer) for easy interconnection to
commonly-avail-
able connectors wired to your
TNC . You may also build your own cable
using a four-
conductor miniature phone plug, per
the diagram below .
The audio level from the receiver
to the TNC maybe adjusted by using the
VOLUME
knob, as with voice operation . The
input level to the
VX-5R
from the TNC should be
adjusted at the TNC side ; the optimum
input voltage is approximately 5 mV at
2 kQ .
Be sure to turn the transceiver
and TNC off before connecting the cables, so
as to prevent
voltage spikes from possibly damaging
your transceiver.
VX-SR OPERATING M-1AV 1L »
Band
Battery Life
(Approx .}
Operating
FNB-58LI FBA-23'
Low Voltage Indicator
50 MHz (1)
6 .5 hours 7 .5 hours
C'AJ : Battery is nearing depletion .
144 MHz
( 1)
6 hours 7 hours
Prepare to replace the battery.
Prepare to charge the battery.
430 MHz
(1)
5 .5 hours 6 hours
C_J
Battery voltage is critically low.
Prepare to replace the battery.
Other Bands (2)
15 hours 9 hours Prepare to charge the battery.