TX3600 SERIES
INSTRUCTION MANUAL
PAGE 7
USING THE PROGRAMMABLE
FUNCTIONS
The TX3600 Series can be programmed to suit your specific
requirements by enabling only those features that are
useful to your operation.
The following section describes all the additional features
available in the TX3600 Series. In most cases only a few of
these features will be enabled in a TX3600 Series at any
one time. Many of the front panel keys are able to perform
multiple functions depending on how they are programmed.
In addition many of the functions can be programmed into
more than one key which means that no specific key can be
addressed as performing a particular function. It is therefore
a matter for your retailer to inform you of the keys that are
enabled and what their functions are. you can then refer
to this manual to learn how to use the specific functions
with which you have been provided. (The table on page
5 is provided to enable you to tick the appropriate boxes
to match the 6 function keys with the specific functions
programmed by your retailer).
THE SqUELCH KEY
The Squelch (or mute) is used to eliminate any annoying
background noise when there are no signals present.
The TX3600 Series features a pre-set Squelch system which
can be switched ON or OFF using the
Squelch
key. When
the Squelch is oFF, the receiver’s background noise will be
heard (unless Quiet is enabled) and the 'BUSy' indicator will
appear on the display. When the Squelch is oN, the receiver
will remain quiet when there are no signals present, but an
incoming signal will overcome the Squelch action and be
heard in the speaker.
To disable the Squelch
, briefly press the
Squelch
key.
A low beep will be heard. If there are no signals present,
you will hear the receiver’s background noise.
To re-enable the Squelch
, briefly press the
Squelch
key
again. A high beep will be heard.
Note:
Disabling the Squelch will allow you to listen to all
other callers on the channel, unless Selcall is in use and the
QUIET
key has been pressed as indicated by the icon on
the display.
Setting the Squelch Sensitivity
If an incoming signal is very weak and is close to the
minimum Squelch level, it may become broken or ‘chopped’
by the Squelch action. To prevent this, simply open the
Squelch to allow the signal to be heard clearly.
Alternatively, you can reduce the Squelch sensitivity
as follows.
The sensitivity of the Squelch to incoming signals can be
set to suit your operating environment. The TX3600 Series
has three preset Squelch sensitivity settings which can be
selected using a front panel key sequence.
• SQL1: Maximum Sensitivity
The Squelch will open even on very weak signals. This
is the best setting for quiet country or rural locations
where there are very few weak stations or little locally
generated interference.
• SQL2: Medium Sensitivity
The Squelch will open on most signals, but will not be
as sensitive to very weak signals or local interference.
Suitable for general or suburban use.
• SQL3: Minimum Sensitivity
The Squelch will open on reasonably strong signals and
weak signals will not be heard. Suitable for inner city
applications or areas of severe interference.
To pre-select the Squelch sensitivity
1. Turn your radio OFF at the
Volume
control.
MC522BC-
Turn your radio
OFF
by pressing and holding
the
PWR
key for 2 seconds.
2.
Hold
the
F1
and
F4
keys while turning the unit back
ON again.
MC522BC-
Hold
the
F1
and
F4
keys while pressing and
holding
the
PWR
key for 2 seconds.
3. Rotate the
Channel Selector
knob to select
SQL1
,
SQL2
or
SQL3
.
MC522BC-
Press the and
keys to select
SQL1
,
SQL2
or
SQL3
.
4.
Turn the unit OFF again to store the setting.
MC522BC-
Turn the unit OFF by pressing and
holding
the
PWR
key for 2 seconds to store the setting.
THE HI/LO POWER KEY
The hi/Lo Power key is used to change the output power of the
transmitter from its maximum level of 5 Watts down to 1 Watt.
There are a number of reasons why you might want to use low
power, including operating in close proximity to other radios or
a nearby repeater, or conserving power when operating from
a battery supply. If the other radios or the nearby repeater are
some distance away, you should select
Hi
power, to ensure maximum range.
Note:
Some channels on your radio may be permanently
programmed for high or Low Power. The hi/Lo power key
will be ignored on these channels.
