VOLUME
Rotate the Volume control clockwise past the
"click" to turn the TX4200 on. Adjust the Volume
control for a comfortable listening level.
(If no sound is heard, adjust the Squelch control
fully counter-clockwise, then readjust the
Volume control).
BACkLIGHTING
The TX4200 features built-in backlighting of the
Liquid Crystal Display (LCD) and all controls.
The backlighting can be toggled bright or dim
by momentarily pressing the Volume knob.
When the radio is turned off, the backlighting
setting is retained and will be restored when the
radio is turned on again.
SQUELCH
The Squelch control is used to eliminate any
annoying background noise when there are no
signals present. To adjust the Squelch, first
rotate the Squelch fully counter-clockwise until
the background noise is heard and the BUSY
indicator on the LCD is displayed. Then
advance the Squelch control clockwise until the
noise just disappears and the BUSY indicator is
extinguished. At this point the receiver will
remain quiet under "no signal" conditions, but
an incoming signal will overcome the Squelch
action and be heard in the speaker. As the
control is further advanced clockwise, the
squelch action is progressively increased and
stronger incoming signals are needed to
overcome it. To receive extremely weak signals
or to disable the squelch, simply turn the
Squelch control fully counter-clockwise.
CHANNEL
Select the required channel by rotating the
Channel selector switch clockwise or counter-
clockwise. Rotating clockwise selects higher
channels and counter-clockwise selects lower
channels. The selected channel is displayed on
the LCD.
SIGNAL STRENGTH METER
The TX4200 has a digital signal strength meter
built into the LCD. When in the normal receive
mode (scan not selected), the received signal
strength is displayed as numbers from 0 to 9
(with 9 being the strongest) on the bottom right
of the LCD.
DUPLEx
Duplex operation allows the TX4200 to transmit
on a different channel to that which it receives.
This allows operation through any repeater
stations in your area. Repeaters automatically
re-transmit your signal providing greatly
increased range.
(See section on repeaters on
page 30).
The Duplex function operates only on channels
1-8. When Duplex is selected on one of these
channels, the TX4200 receives on the selected
channel but actually transmits 30 channels
higher.
e.g.
Channel Selected 1 2 3 4 5 6 7 8
Receive Channel 1 2 3 4 5 6 7 8
Transmit Channel 31 32 33 34 35 36 37 38
The TX4200 allows you to programme Duplex
7
13.8 V DC
GME ELECTROPHONE MODEL TX4200
SERIAL No.
MANUFACTURED BY:
STANDARD COMMUNICATIONS Pty. Ltd.
6 Frank St., GLADESVILLE N.S.W.
COMPLIES WITH SMAS 250
APPR. No. 2503017
SELCALL IDENT
ANTENNA
ALARM
EXT SPKR
Extension
Speaker
Socket
External
Power
Lead
Your TX4200
Selcall Ident Code
External Antenna
flying lead
Alarm
Input/Output
Содержание TX4200 Series
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