Icom IC-7700 Instruction Manual - Page 15

1 PANEL DESCRIPTION @3 RF GAIN CONTROL [RF] (outer control; p. 3-9) Adjusts the RF gain level. While rotating the RF gain control, you may hear noise. This comes from the DSP unit and does not indicate a malfunction. Sensitivity increases Sensitivity decreases @4 NOISE BLANKER SWITCH NB (p. 5-16) ➥ Switches the noise blanker ON and OFF when pushed. The noise blanker reduces pulse-type noise such as that generated by automobile ignition systems. This function cannot be used in FM mode, or on non-pulse-type noise. • The [NB] indicator above this switch lights green while the function is activated. ➥ Enters blanking-width set mode when pushed and held for 1 sec. @5 DRIVE GAIN CONTROL [DRIVE] (p. 3-13) Adjusts the transmitter level at the driver stage. Active in all modes (other than SSB mode with [COMP] OFF). Push Decreases Increases @6 COMPRESSION LEVEL CONTROL [COMP] (p. 6-5) Adjusts the speech compression level in SSB. Push Compression gain decreases Compression gain increases @7 MONITOR GAIN CONTROL [MONI GAIN] (p. 6-4) Adjusts the transmit IF signal monitor level. Push Monitor gain decreases Monitor gain increases @8 VOX GAIN CONTROL [VOX GAIN] (p. 6-2) Adjusts the transmit/receive switching threshold level for VOX operation. Push Low sensitivity High sensitivity @9 ANTI VOX CONTROL [ANTI VOX] (p. 6-2) Adjusts the VOX sensitivity to speaker audio to prevent unwanted VOX activation. Push 'Less sensitive' and confirm 'More sensitive' proper operation and confirm proper operation #0 LCD CONTRAST CONTROL [CONTRAST] Adjusts the LCD contrast. Push Low contrast High contrast #1 LCD BRIGHTNESS CONTROL [BRIGHT] Adjusts the LCD brightness. Push Dark Bright #2 AUTOMATIC TUNING SWITCH [AUTOTUNE] (p. 5-19) Turns the automatic tuning function ON and OFF in CW and AM modes. IMPORTANT! When receiving a weak signal, or receiving a signal with interference, the automatic tuning function may tune the receiver to an undesired signal. 1-5