User manual ICOM IC-7700

[. . . ] i7700 Instruction Manual HF/50 MHz TRANSCEIVER A-6612H-1EX Printed in Japan © 2007 Icom Inc. FOREWORD Thank you for making the IC-7700 your radio of choice. We hope you agree with Icom's philosophy of "technology first. " Many hours of research and development went into the design of your IC-7700. D FEATURES Ultimate receiver performance: third-order intercept (IP3) of +40 dBm (HF bands only) Built-in Baudot RTTY and PSK31 modulator/demodulator and direct PC keyboard connection capability for RTTY and PSK31 operations without a PC High resolution spectrum scope-- center frequency and fixed frequency modes, plus mini-scope displays IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating instructions for the IC-7700. EXPLICIT DEFINITIONS WORD R WARNING CAUTION NOTE DEFINITION Personal injury, fire hazard or electric shock may occur. No risk of personal injury, fire or electric shock. TRADEMARKS Icom, Icom Inc. [. . . ] 5-3 D Mini scope screen indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 D Scope set mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Preamplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 RIT function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 D RIT monitor function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 AGC function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 D Selecting the preset value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 D Adjusting the AGC time constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 D Setting the AGC time constant preset value . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 Twin PBT operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 IF filter selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13 D IF filter selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13 D Filter passband width setting (except FM mode) . . . . . . . . . . . . . . . . . . 5-13 D Roofing filter selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14 D DSP filter shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14 D Filter shape set mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14 Noise blanker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 D NB set mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 Noise reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17 Dial lock function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17 Notch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18 Digital selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18 Autotune function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19 5-1 5 FUNCTIONS FOR RECEIVE Spectrum scope screen This DSP-based spectrum scope allows you to display the frequency and relative signal strength of received signals on the strengths of signals. The IC-7700 has two modes for the spectrum display-- one is center mode, and the other is fixed mode. [. . . ] After turning the power ON, the IC-7700 will work with the updated firmware. The sub CPU and/or DSP firmware update will start automatically depending on the updated contents, and this will take approx. DO NOT turn the IC-7700 power OFF until the normal operational screen appears. · The "FIRMWARE UPDATING" dialog as above disappears. !1 Push POWER to turn the IC-7700 power OFF, then ON again. Click [OK] to finish the firmware update. SCOPE-DSP UPDATING. . . NEVER turn power OFF. !2 Depending on the update, one or two dialog boxes as at left appear on the IC-7700 display in sequence. [. . . ]