Icom IC-718 Instruction Manual - Page 22

5 RECEIVE AND TRANSMIT s Mode selection The following modes are available in the IC-718: SSB (LSB/USB), CW, CW REV (CW reverse), RTTY, RTTY REV (RTTY reverse)and AM. ➥ Push [MODE] one or more times to select desired operation mode. ➥ Push [MODE] for 1 sec. to toggle between USB and LSB. (SSB mode only) ➥ Push [MODE] for 1 sec. to toggle between CW and CW reverse or RTTY and RTTY reverse. (CW and RTTY mode only) • The selected mode is indicated in the function display. Note: If desired mode cannot be selected, it's use may inhibited by initial set mode. (p. 44) OPERATING MODE SELECTION USB CW RTTY LSB CW RTTY AM MODE Push momentarily MODE Push for 1 sec. s RF gain and Squelch The IC-718 uses the same control, [RF/SQL], to adjust either the RF gain or the squelch. [RF/SQL] adjusts either the RF gain or the squelch depending on the operating mode selected and the condition of the RF/SQL item in initiaset mode (p. 44). • [RF/SQL] control priority Set mode setting USB, LSB, CW, RTTY rS (RF/SQL) (default) RF/SQL At (AUTO) RF GAIN AM RF/SQL SQL* Sq (SQL) SQL* SQL* * The RF gain is set to maximum level when the [RF/SQL] is set as [SQL] control. The RF (Radio Frequency) gain is used to adjust the receiver gain. • Shallow rotation moves the S-meter to the right indicating the signal strength which can be received. The recommended position for RF gain is the 12 o'clock position since this sets RF gain to the max. The SQUELCH removes noise output from the speaker (closed condition) when no signal is received. The squelch is available for the other modes. • A segment appears in the S-meter to indicate the S-meter squelch level. • When set as the [RF/SQL] control Maximum RF gain Squelch is open. RF gain adjustable range S-meter squelch threshold S-meter squelch • When set as the [SQL] control Squelch is open. S-meter squelch threshold S-meter squelch Shallow Deep • When set as the [RF] control Maximum RF gain Adjustable range Minimum RF gain 20