If a busy GS channel is found, the receiver will
'lock' onto it and will remain there for as long as
the channel is busy, and for 5 seconds after the
transmission ceases, AS LONG AS THERE
ARE NO SIGNALS ON THE PRIORITY
CHANNEL. During this time, the receiver will
continue to check the Priority channel for
signals every 2 seconds, resulting in a series of
small 'breaks' in the reception of the 'locked'
channel. If no signals are heard on the locked
channel after 5 seconds, the radio will resume
scanning.
If, while locked on a GS channel, a signal
appears on the Priority channel, the receiver
will switch straight to the Priority channel and
will give 3 short beeps. This is to warn you that
the channel you are
now
listening to has
changed from the GS channel you
were
listening to just a few moments earlier. The
receiver will now continue to monitor the
Priority channel for a long as it is busy. During
this time you can transmit on the Priority
channel in the usual way. However, if there has
been no activity on the Priority channel for 5
seconds (i.e. no signals are being received and
you are not transmitting), the radio will resume
scanning the other channels.
•
To skip over a busy GS or Priority channel
and resume scanning, briefly press the
CALL
button (on the microphone).
•
To talk on the Priority channel, even while
scanning, press the
PTT
switch. The radio
will jump to the Priority channel and will
remain there for as long as the channel is
active, and for 5 seconds after the channel
becomes clear. During this time you may
converse normally on the channel even
though the Scan function is still selected.
After the channel has been inactive for 5
seconds, the radio will resume scanning.
•
To manually hold a busy GS channel, press
SCAN
. The radio will exit the Scan mode
and will remain on the busy GS channel.
NOTE: You will no longer be monitoring the
Priority channel because the receiver is no
longer in the Scan mode.
•
To cancel the Scan mode, press
SCAN
.
If the radio was scanning, it will exit Scan
and return to the Priority channel.
If the radio was stopped on a busy channel,
it will exit Scan and remain on that channel.
CHECkING WHICH CHANNELS
ARE IN MEMORY
The following method can be used to identify
which channels are stored in memory.
1. Press
OS/GS
to select the required Scan
mode.
2. Turn the Squelch control fully counter-
clockwise so that the receiver noise is heard.
3. Press
SCAN
. The TX4200 will begin scanning
but will lock onto the first Scan channel in
the memory.
4. Briefly press the
CALL
button to reveal the
next Scan channel in memory. In this way
you can step through all channels stored in
the memory.
If you wish to add or remove channels from the
memory, you will first need to cancel the Scan
mode, then follow the directions described
under 'Programming the Scan Memories'.
TRANSMITTING
To transmit, press the
PTT
switch. Hold the
microphone 2 - 6 cms from your mouth and
slightly to one side, so that your voice does not
project directly into the microphone. Speak at a
normal voice level. The TX4200 microphone is
an electret type which is quite sensitive to
normal voice levels. It is not necessary to raise
your voice or shout into the microphone.
You will find that the TX4200 will not allow you
transmit when some modes or functions are
selected. This is to prevent accidental
transmissions over the top of others. If you
press the
PTT
switch during one of these modes
or functions, the TX4200 will simply produce a
low beep until the
PTT
switch is released.
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