Side Controls and Connectors
Battery Pack Release Button - To remove the Battery
Pack, push up on the release button and slide the
Battery Pack away from radio.
Monitor Switch - Press to listen to all transmissions
on the currently selected channel. Release the monitor
switch to hear only those transmissions directed to
Push-to-Talk (PTT) Switch - Press and hold to talk.
Release to listen for a reply.
TX Power HI/LO Switch - Press to set the transmit
output power to high or low.
AC Adapter/Charger Jack - Connect AC Adapter/
- 6 -
To attach the antenna to the TNC connector on top of
your radio, press down and rotate the antenna base
clockwise until it seats firmly into place.
The SPU 416K and SPH 516D comes with either a
standard or heavy duty rechargeable Battery Pack.
Before installing or removing the rechargeable Battery
Pack, be sure that the power (ON/OFF Volume
control) is turned off.
To remove the Battery Pack, push up on the release
button and slide the Battery Pack away from the radio.
To replace, align the Battery Pack rails with the
transceiver and slide toward the transceiver unit until
the Battery Pack locks in place.
Recharging the Nickel-Cadmium Battery Pack
Before charging, be sure that the power
(ON/OFF Volume control) is turned off.
Before you first use the Nickel-Cadmium Battery Pack
(either standard or heavy duty), charge it fully. Insert
the discharged Battery Pack in the rapid charger, or
connect the trickle charger to the side of the unit.
In the trickle charger, the standard pack charges fully in
8 hours, and the heavy duty pack in 12 hours. In the
rapid charger, the standard pack charges fully in 1.5
hours, and the heavy duty pack charges fully in 2