Rear Panel - Intek M-490 PLUS Manual De Instrucciones

19. PA/SQL Control
SQUELCH CONTROL
The SQUELCH control allows to silent the receiver by cutting the background noise.
Turn the SQUELCH knob clockwise until the background noise is cut. Turn the SQUELCH knob counter clockwise
(SQUELCH opening) to listen to the weakest signals.
PA CONTROL
The radio includes the PA (Public Address) function, in order to spread audio messages through an external speaker. To
use the PA function, connect an external speaker (optional) to the PA jack (24) located on the rear side of the radio. Turn
the PA/SQL knob completely counter clockwise to the PA position. The PA icon (Q) appears on the LCD display. Now it is
possible to press the PTT key (27) and speak into the microphone to spread your message through the external
speaker. Adjust the microphone gain with the MIC GAIN knob (16) to the desired level.
20. OFF/VOL (OFF / Volume) Control
This knob switches the radio ON and OFF and it adjusts the volume control. If no signals are being received on the
operating channel, it is suggested to open the SQUELCH and adjust the volume to the desired level while listening to the
background noise.
21. MICROPHONE Connector
Connect the supplied dynamic microphone to this connector, locking it through the ring nut.

Rear Panel

22. ANTENNA Connector
Antenna connector. Refer to the section INSTALLATION OF THE ANTENNA.
23. S-METER Jack
This jack is for connecting an external S-METER (optional).
24. PA Jack
If the PA function has to be used, connect to the external speaker (optional) to this jack. Refer to item no. 19.
25. EXT (External Speaker) Jack
This jack is for connecting an external speaker (optional).
26. 13.2VDC POWER CORD
13.2VDC power cord input.
Controls and operation
22
ANTENNA
- 7 -
23 24 25
S-METER PA EXT
POWER
13.2V DC
26