GME TX665 - Manual (Page 12)

PA G E 1 2 I N S T R U C T I O N M A N UA L T X 6 6 5
TRANSMITTING
To transmit, press and hold the PTT (Push-To-Talk) switch. The other radio you are
talking to must be set to the same channel. Hold the radio approximately 2 – 5 cm
from your mouth with the antenna vertical and speak into the built-in microphone.
While the PTT switch is pressed, the LED indicator on the upper edge of the radio will
light RED and the
icon will appear on the LCD. When you have finished speaking,
release the PTT switch to receive incoming signals (it is not possible to transmit and
receive at the same time). If no further signals are received, the unit will revert to
Standby mode.
TIP: The PTT switch can also be used to transmit a Call Alarm melody.
When the Call Alarm melody is enabled (see Menu options for more details on
Call Alarm settings), pressing the PTT switch twice quickly will play the Call Alarm
melody in the speaker of other radios on the same channel to alert them to your call.
During this time the
icon is displayed and the LED indicator will light RED for
about 5 seconds. The Call Alarm can only be sent once per minute.
SQUELCH
The Squelch is used to eliminate the background noise when there are no signals
present. When the Squelch is open the receiver’s background noise can be heard.
When the Squelch is closed the receiver remains quiet while there are no signals
present but any incoming signals will override the Squelch and be heard in the speaker.
To open the Squelch, briefly press the SQL key. This will allow you to check the
current channel for activity before transmitting, particularly if you have CTCSS
enabled. When the Squelch is open, the LED indicator on the upper edge of the radio
will light Green and the
and icons will appear on the display. During this time
you will hear static or hiss if the channel is clear. Do not transmit if you hear any signals.
To close the Squelch, briefly press the SQL key again.
NOTE: The Squelch sensitivity is preset in the Menu – Squelch Level setting (see
Menu options for more details on setting the Squelch sensitivity).
KEYPAD LOCK
The Keypad Lock disables the keys to prevent accidental key presses from changing
the preferred settings of the radio. When the keys are locked, the
icon is
displayed and all key presses are ignored except for the PTT, SQL and the Keypad
unlock sequence.
To lock the Keypad press the F key (the F icon will appear) then hold the key.
The
icon will appear on the display.
To cancel the Keypad Lock, press the F key then hold the key. The icon
will disappear.