TX677 Instruction Manual
12 June 2018
© 2018 Standard Communications Pty Ltd trading as GME. All rights reserved.
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Content
Battery Usage
The time taken to discharge the battery pack will depend on how you use the radio. The battery pack
supplied is powerful enough for up to 20 hours of use under average conditions using low power.
The sections that follow provide directions and recommendations on the optimal use of the battery
pack.
Battery Low Alert
When the battery icon blinks on the radio’s display, the battery level is low and the battery pack
should be recharged.
Conserving Battery Power
The radio has built-in power saving features to help you get the maximum amount of time between
charges from your Li-ion battery pack. If you need to operate your radio in a situation where you
require maximum battery life (e.g. a remote site where there is no convenient recharging facility
nearby) the following hints can greatly reduce the amount of power drawn from the battery pack.
Standby Mode
The radio will automatically enter the Standby mode when it is inactive (i.e. not transmitting or
receiving signals).
While in Standby mode it will still check for incoming signals but it will draw considerably less power
from the battery pack. As soon as a signal is heard or the keys are pressed the radio will ‘wake up’
again. This Standby mode is automatic and by itself can extend the battery life by many hours.
Use CTCSS/DCS
If you are expecting to receive signals on a busy channel, you can program that channel for CTCSS/
DCS operation and get the other person to call you using the same CTCSS/DCS tone. Your radio will
then remain in Standby and ignore all other signals until your selected CTCSS/DCS tone is received.
Avoid Scanning
The radio draws more power from the battery pack when scanning than when monitoring a single
channel. This is because it must ‘wake up’ more often to monitor each channel for activity. In
addition, scanning increases the chance of finding a signal thereby keeping the receiver ‘awake’ and
the Squelch open more often.
