Operating the Walkie−Talkies
64
Selecting a channel
PMR446 (Private Mobile Radio) walkie−talkies can be used throug-
hout Europe free of registration and call charges. There are 8 radio
channels available within the frequency range 446.000 MHz to
446.100 MHz.
1 x
,
/
,
Select the channel and confirm it
Every process is automatically cancelled if there is no in-
put within 5 seconds.
Channel
Frequency (MHz)
Channel
Frequency (MHz)
1
446.00625
5
446.05625
2
446.01875
6
446.06875
3
446.03125
7
446.08125
4
446.04375
8
446.09375
Selecting CTCSS
1
/ CDCSS
2
code
There are 38 analogue (CTCSS 1 − 38) and 83 digital (CDCSS 39 −
121) codes available per channel. It is only possible to communicate
using the walkie−talkies when they are each set to the same channel
and CTCSS code.
The CTCSS codes are transmitted as inaudible signals
together with the standard voice communication. When
received, the voice communication signal is only trans-
ferred to the loudspeaker when the channel and CTCSS
code set on the receiver are identical to the data received
(settings on transmitter). If, by coincidence, another sub-
scriber is using the same channel and CTCSS code,
change to a free channel together with the party being
called.
2 x
,
/
,
Select the CTCSS code and
confirm
it
1
CTCSS: C
ontinous
T
one
C
oded
S
quelch
S
ystem
2
CDCSS: C
ontinous
D
igital
C
oded
S
quelch
S
ystem
Содержание WTF 729
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