Gme TX3220 User Manual download pdf (Page 6)

Scanning in Group Scan Mode.

The Group Scan feature scans all the channels programmed

into the scan memory, with the priority channel being

scanned after every fourth channel.

• If a signal is heard on a scan channel, the receiver will

‘lock’ onto it and remain there for as long as the channel

is busy, and for 5 seconds after the channel has cleared,

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 after 5 seconds, the radio

will resume scanning.

•

If a signal appears on the Priority Channel at any time

(even when locked on a scan channel) the receiver will

switch straight to the Priority Channel and will stay there

for as long as the channel is busy. During this time you

can transmit on the Priority Channel in the usual way.

Once there has been no activity on the Priority Channel

for 5 seconds, the radio will resume scanning the

other channels.

•

To skip over a busy channel, brieﬂy press the

SCAN

key twice.

•

To talk on the Priority (working) Channel while in Scan

mode simply press the PTT button on the microphone.

When you have ﬁnished your conversation and there

has been no further activity on the Priority Channel for 5

seconds, the radio will resume scanning

the other channels.

•

To exit directly to the Priority Channel, press the

PRI key. Scan will be cancelled.

•

To hold onto a busy scan channel, brieﬂy press the

SCAN key while the channel is busy. The radio will exit

the Scan mode and will remain on that channel. Press

SCAN again to continue scanning.

•

To cancel the Scan mode, brieﬂy press the SCAN key.

A low beep will be heard and ‘SCA

N’ will disappear

from the display. If the radio was on a busy channel it

will remain on that channel, otherwise it will return to

the priority channel.

Note: The radio will not scan if the Squelch is open.

TIME-OUT TIMER

The TX3220 has a built-in time-out timer which

automatically disables the transmitter if the PTT switch

is pressed for too long. This feature prevents the channel

from being blocked for long periods should your push-to-

talk switch become jammed or pressed accidentally. The

time-out period is set to two minutes by default, but can be

changed or even disabled by your retailer.

CTCSS

CTCSS (Continuous Tone Coded Squelch System) is a

squelch quieting system that uses one of 50 preset sub-

audible (very low frequency) tones to open and close the

squelch on your radio. The system applies a continuous

low level tone to your transmission, and a matching tone

decoder to your receiver’s squelch. When CTCSS is enabled,

the channel remains quiet until someone transmits using

the selected tone. When the transmission ends, the channel

becomes quiet again. By using different tones, several

groups of people can share the same channel without

disturbing each other.

Your TX3220 allows CTCSS to be enabled or disabled on

individual channels. In addition, the CTCSS tone frequency

used is user programmable.

When CTCSS is ﬁrst enabled, it must be set up as follows:

To enable CTCSS on your radio

Use the following procedure:

1. Switch the TX3220

OFF at the volume control.

Press and

hold the SQL while turning the radio ON

again. ‘SILE

NT’ and ‘BUSY’ will be ﬂashing to indicate

you are now setting the receive tone. The channel

number will now correspond to one of 50 different

CTCSS tones as shown in the table below. The factory

default is 00 (Tone Off).

3. To select the desired receive CTCSS tone, rotate

the channel selector until the required tone number

is displayed.

Press and

hold the SQL key. The display will ﬂash and

a high beep will be heard as the receive tone is stored.

Note: Adjusting the receiver CTCSS tone automatically sets

the transmit CTCSS tone to the same frequency.

If a different transmit CTCSS tone is required, continue with

step 5 below, otherwise go to step 7.

Now brieﬂy press the SQL key to select the desired

CTCSS transmit tone. ‘SILENT’ and ‘TX’ will ﬂash. Note

the default transmit tone will be the same as the receive

tone you set in step 3 above.

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Gme TX3220 User Manual Page 6

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