Icom IC-7100 Instruction Manual - Page 8

1 PANEL DESCRIPTION Controller - Front panel (Continued) PWR AF RF/SQL i7100 TX / RX CLR M-CH BANK PBT RIT RIT TUNER/CALL MENU NB NR MIC/RF PWR SPEED/PITCH P.AMP ATT NOTCH DR SET QUICK AUTO TUNE RX�CS SPEECH XFC MPAD !2 !3 !4 !5 !6 !7 !8 !9 @0 @1 !2 NOISE BLANKER KEY NB (AI sec. 5) (Mode: SSB/CW/RTTY/AM) ➥➥Push to turn the noise blanker ON or OFF. The noise blanker reduces pulse-type noise such as that generated by vehicle ignition systems. The noise blanker is not effective for non-pulse-type noise. • "NB" appears when the noise blanker is ON. ➥➥Hold down for 1 second to display the "NB" screen. Push to return to the previous screen. !3 K EY SPEED/CW PITCH ADJUSTMENT KEY SPEED/PITCH (AI sec. 4, 6) Push to open the Key speed/CW pitch adjustment display. • Rotate [M-CH] to adjust the keying speed of the internal electronic CW keyer to between 6 wpm (minimum) and 48 wpm (maximum). • Rotate [BANK] to shift the received CW audio pitch and the CW sidetone pitch without changing the operating frequency. • T he CW pitch can be adjusted from 300 to 900 Hz in approximately 5 Hz steps. • Push again to close the window. !4 N OISE REDUCTION KEY NR (AI sec. 5) ➥➥Push to turn DSP noise reduction ON or OFF. • "NR" appears when noise reduction is ON. ➥➥Hold down for 1 second to display the "NR" screen. Push to return to the previous screen. • Rotate the Dial to adjust the DSP noise reduction level. Set for maximum readability. !5 P REAMP•ATTENUATOR KEY P.AMP ATT ❍ PREAMP KEY Operation (AI sec. 5) (Frequency band: HF, 50/70 MHz) Push to select one of two receive RF preamplifiers, or to bypass them. • "P. AMP1" is a wide dynamic range preamplifier. It is most effective for the 1.8 to 21 MHz bands. • "P. AMP2" is a high-gain preamplifier. It is most effective for the 24 to 70 MHz bands. • No indicator appears when the preamplifiers are not selected. ✔ What is the preamplifier? The preamplifier amplifies signals in the front end to improve the S/N ratio and sensitivity. Select "P. AMP1" or "P. AMP2" when receiving weak signals. (Frequency band: 144/430 MHz) Push to turn the preamplifier ON or OFF. • "P.AMP" appears when the preamplifier is ON. ❍ ATTENUATOR KEY Operation (AI sec. 5) ➥ Hold down for 1 second to turn ON the attenuator. • "ATT" appears when the attenuator is ON. ➥ Push to turn OFF the attenuator. • "ATT" disappears. ✔ What is the attenuator? The attenuator prevents a desired signal from being distorted when very strong signals are near it, or when very strong electromagnetic fields, such as from a broadcasting station, are near your location. 1-4