User manual ICOM IC-756PRO

[. . . ] INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i756PRO IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the transceiver. 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. SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating instructions for the IC-756PRO. PRECAUTIONS R WARNING HIGH VOLTAGE!NEVER attach an antenna or internal antenna connector during transmission. [. . . ] In addition, the transceiver can display the multi-function digital meter in the LCD display, which displays all transmit meters simultaneously. · Analog transmit meter Push [METER] to select RF power (Po), SWR, ALC or compression level (COMP) for transmit metering. [METER] switch · Multi-function digital meter q Push [METER] for 2 sec. to turn the multi-function digital meter ON or OFF. w Push [(F-1)P-HOLD] to toggle the peak level hold function ON or OFF. · "P-HOLD" appears on the window title when the peak level hold function is turned ON. ANT 1 BW 2. 4k SFT 0 USB FIL2 qw:pp TX METER Po P. AMP 1 VFO qrqotpp 1 14. 100. 00 USB VFO USB FIL2 DISPLAY INDICATION Po SWR MEASUREMENT Indicates the relative RF output power in %. Indicates the SWR over the transmission line. When the meter movement shows the input signal level exceeds the allowable level, the ALC limits the RF power. In such cases, reduce the [MIC GAIN] control. Indicates the compression level when the speech compressor is in use. ATT OFF AGC MID VOX OFF COMP OFF WIDE P-HOLD P-HOLD S Po Po ALC ALC COMP COMP SWR SWR 1 qrwptpp 1 14. 100. 00 USB MULTI-FUNCTION METER . +20. . . +40. . . + 60dB . . +20 . . . +40 . . . +60dB 025 25 50 100% 1. 5 1. 5 2 2. 5 2. 5 3 ALC COMP s SWR reading The SWR meter indicates the SWR over the transmission line in all modes. Less than 1. 5:1 SWR meter 5 10 9 25 50 2 10 3 20 dB q Push [TUNER] to turn the antenna tuner OFF. w Push [METER] one or more times to select the Po meter. e Push [CW/RTTY] once or twice to select RTTY mode. t Rotate [RF POWER] clockwise past the 12 o'clock position for more than 30 W output power (30%). y Push [METER] once to select the SWR meter as the transmit meter. u Read the SWR on the SWR meter. + 20 1 + 40 100 + 60dB S Po 0 1 1. 5 SWR 0 COMP ALC The built-in antenna tuner matches the transmitter to the antenna when the SWR is lower than 3 : 1. 36 RECEIVE AND TRANSMIT 5 s Speech compressor The RF speech compressor increases average RF output power, improving signal strength and readability in SSB. y Push [METER] once to select the COMP meter. u Adjust the [COMP] control so that the COMP meter reads within 10 dB and 20 dB. COMP meter 5 10 9 25 50 23 20 10 dB · Speech compressor q Select USB or LSB mode. w Push [COMP] momentarily to turn the speech compressor ON and OFF. to toggle between narrow, middle or wide transmit filter. · Transmit filter width: NAR 2. 0 kHz MID 2. 6 kHz WIDE 2. 9 kHz 1 + 20 + 40 100 + 60dB S Po 0 1 1. 5 SWR 0 COMP ALC When the ALC meter peaks above the ALC zone, your transmitted voice may be distorted. · Compression level setting q Select USB or LSB mode. w Preset the transceiver as follows: [COMP] function : OFF [METER] function : ALC [MIC GAIN] control : Center position [COMP] control : Center position [RF POWER] control : Max. counterclockwise e Transmit at your normal voice level. r Adjust the [MIC GAIN] control so that the ALC meter reads within the ALC zone, whether or not you speak softly or loudly. t Push [COMP] momentarily to turn the speech compressor ON. [METER] switch [MIC GAIN] control [RF POWER] control [COMP] switch [COMP] control 37 5 RECEIVE AND TRANSMIT s Digital voice recorder The transceiver has a total of 8 memory channels, 4 each for transmit and receive, of digital voice memories. can be recorded in each transmit and receive channels. [. . . ] CW) [CW PITCH] setting (0=low pitch to 255=high pitch) [RF POWER] setting (0=min. to 255=max. ) [KEY SPEED] setting (0=slow to 255=fast) [NOTCH] setting (0=low freq. to 255=high freq. ) [COMP] setting (0=min. to 255=max. ) [BK-IN DELAY] setting (0=short delay to 255=long delay) [BAL] setting (0=max. [. . . ]