ICOM 297400 Manuale Utente

6

2

BASIC OPERATION

■

 q  After selecting the standby frequency, push 

[↔] to ex-

change it with the active frequency.

 • Adjust the squelch level in the menu mode, if necessary (p. 23).

 

• Rotate

[VOL] to set the volume level, if necessary.

 • When receiving a signal, “RX” appears and audio is heard from

the speaker or headset.

 • Further adjustment of audio level may be necessary at this

point.

w

  Hold down 

[PTT] to transmit, then speak into the micro-

phone.

 • Transmit indicator “TX” lights.

e

 Release 

[PTT] to receive.

Frequency exchanging can be also performed remotely from 
the yoke-mounted frequency exchange switch.

■

q

 Select an operating frequency.

 • Refer to pages 5, 6 for details.
 • “RX” appears when receiving a signal or opening squelch.

w

  Push 

[VOL] to open the squelch manually.

 • Refer to page 20 “Squelch test function” for details.

e

 Rotate the volume control to adjust the audio level.

■

q

  Select the yoke-mounted communication/intercom switch 

to the “communication” position.

w

 Select an operating frequency.

 • Refer to pages 5, 6 in details.

e

 Push the PTT switch.

 • “TX” appears.

r

 Speak into the microphone at your normal voice level.

 •

DO NOT set the microphone too closely to your mouth or speak 
too loudly. This may distort the signal.

t

 Release the PTT switch to receive.

 To prevent interference, listen on the frequency 

before transmitting. If the frequency is busy, wait until the 
frequency is clear.

 hold down 

[↔] continuously. Other-

wise, the standby frequency disappears. If this happens, 
again hold down 

[↔] until the standby frequency reap-

pears.