Gme TX3345 User Manual download pdf (Page 10)

There is no difference in performance between the different

tone sets.

If using CTCSS you can chose either the 50 tone set or the

38 tone set. GME radios traditionally use the 50 tone set,

however the 38 tone set is also included for compatibility

with other radios.

To switch between the 50 and the 38 tone / set:

1. Switch the radio off.

2. Press and hold the

SQL

ALPHA

key while switching the radio

on again.

3. CTC50 or CTC38 will be displayed brieﬂy to indicate the

selected tone set.

TO SELECT A CTCSS OR DCS TONE

NOTE: When selecting tones, CTCSS tones are preﬁxed with

‘CTC’ and DCS tones are preﬁxed with ‘DC’. Please refer to

the CTCSS/DCS table later in this manual for a list of tone

numbers and their associated frequencies.

1. Press and hold the

key until the radio beeps.

2. Brieﬂy press the

key repeatedly until ‘CTCxx’ or

‘DCxxx’ is displayed (where xx represents a tone number

in the CTCSS or DCS Tone Frequency Chart).

3. Press the

or keys to scroll through the tone

list and select the required CTCSS or DCS tone. CTCSS

tones are grouped in the lower half of the list while DCS

tones are grouped above the CTCSS tones.

4. If you wish to view the CTCSS frequency or DCS tone

instead of the table number, brieﬂy press the

LVL

PRI

key.

To return to the table code, brieﬂy press the

LVL

PRI

key again.

5. To disable CTCSS or DCS tones altogether scroll to the

bottom of the list and select ‘CTCoF’.

6. To store the setting, press and hold the

key until

the radio beeps or wait for it to time out.

ENABLING CTCSS/DCS ON A CHANNEL

Once a CTCSS or DCS tone has been selected, it can be

enabled on individual channels.

1. Press the

or keys to select the required

channel.

2. Press and hold the

SQL

ALPHA

key. A high beep will be heard

and the

(CTCSS) or (DCS) will appear indicating

that the ‘Silent’ mode has been activated on that

channel.

You may activate CTCSS or DCS on as many channels

as you wish except channel 5 which is designated for

emergency use.

DISABLING CTCSS/DCS ON A CHANNEL

1. Press the or keys to select the required

channel. The

or icon will be visible indicating

that the ‘Silent’ mode is currently enabled on that

channel.

2. Press and hold the

SQL

ALPHA

key. A low beep will be heard

and the

or icon will disappear indicating that the

‘Silent’ mode has been disabled on that channel.

MONITORING THE CHANNEL

It is useful to be able to temporarily open your radio’s

Squelch to allow you to listen for signals from other CTCSS/

DCS users outside your group. Because their CTCSS/DCS

tone is different to yours, your Squelch would normally

remain closed, preventing you from hearing them. You can

use the

SQL

ALPHA

key to open the Squelch and listen to the

channel to check that it is clear before transmitting. This will

help prevent you from accidentally transmitting over the top

of others.

To monitor the channel

Brieﬂy press the

SQL

ALPHA

key. If there are no signals present,

you will hear the usual hiss of an empty channel. Press

the

SQL

ALPHA

key again to restore the Squelch to its previous

setting.

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Gme TX3345 User Manual Page 10

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