PREPARING YOUR RADIO FOR USE
SWITCHING ON, RECEPTION
AND SWITCHING OFF
Attaching / removing the antenna
1.
To switch on, rotate the on/off/volume control
(1) on the top of the radio clockwise.
2.
The radio will enter standby mode. This is
A
indicated by the LED Amber flashing once
every 5 seconds, signalling that the radio is
ready for use.
3.
Adjust the volume control (1) to select the
B
desired volume level.
4.
Using the channel buttons (3) ensure you have
the correct channel selected.
5.
When receiving a valid signal, the LED will
illuminate steady green and audio will be
emitted from the radio's speaker or audio
accessory (if attached)
6.
When finished using the radio, switch off by
turning the on/off/volume control (1) until it
1.
To attach, carefully align the antenna with the
clicks and the radio will be switched off.
socket. Screw in the antenna and clockwise
(taking care not to cross the thread) until it
is seated firmly with the accessory cover's
TRANSMITTING
rubber ring between the antenna and the top
1.
Perform steps 1 through to 5 of 'Switching On,
of the radio.
(A)
Reception and Switching Off.'
2.
To remove, unscrew the antenna
2.
Before transmitting, monitor the channel and
anti-clockwise.
(B)
make sure it is clear.
Attaching / removing the battery pack
3.
When receiving a signal, wait until the signal
stops before transmitting. The radio cannot
C
transmit and receive simultaneously.
4.
Press the PTT (Push To Talk) button (4) to begin
your transmission. To confirm transmission the
LED illuminates red.
5.
For best transmitted speech quality you must
talk directly into the radio's microphone (10) at
around 4cm between your mouth and the radio.
D
6.
Please note: if you talk into the top of the
radio or with your mouth further away, you will
transmit poor quality speech.
1.
To attach, locate the pegs on the bottom of the
7.
When the transmission is finished, release the
battery into the slots on the radio and press
PTT button.
the top of the battery against the radio. Secure
battery by tightening the screw clockwise
by hand. (Do not use any implement or
overtighten).
(C)
2.
To remove, unscrew the locking screw anti-
clockwise and pull the battery away from the
top of the radio.
(D)
www.entel.co.uk
EU DECLARATION OF CONFORMITY
Hereby, Entel UK Limited
Declares that the radio equipment type
HT644 is in compliance with
Directive 2014/53/EU
The full text of the EU declaration of
conformity is available at the following
internet address:
www.entel.co.uk/red
HT644
Quick Start User Guide
Designed in the United Kingdom
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