User manual ICOM IC-746PRO

[. . . ] INSTRUCTION MANUAL HF/VHF ALL MODE TRANSCEIVER i746PRO This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FOREWORD We understand that you have a choice of many different radios in the market place. We want to take a couple of moments of your time to thank you for making the IC-746PRO your radio of choice, and hope you agree with Icom's philosophy of "technology first". Many hours of research and development went into the design of your IC-746PRO. Rather than completely redesigning all areas to create a new radio, the engineering team at Icom decided to follow in the footsteps of the IC-746 (one of the best value transceivers in the marketplace) with the new "PRO. " Focused on real world improvements compiled over the last few years from letters, phone calls, EMails and newsgroup postings, the engineering team at Icom is proud to say "many of these changes were compiled from a list of suggestions from you, the amateur radio operator!" PRECAUTIONS R WARNING RF EXPOSURE! [. . . ] 53) Push [NR] to turn the noise reduction ON and OFF. · Rotate [NR] control to adjust the noise reduction level. · "NR" appears when the noise reduction is set to ON. D Convenient functions for transmit · Speech compressor (p. 58) While M1 is selected with [MENU], push [F3 CMP] to turn the speech compressor ON and OFF. · "COMP" appears when the speech compressor is set to ON. · Transmit quality monitor (p. 57) Push [MONITOR] to turn the monitor function ON and OFF. · "MONI" appears when the monitor function is set to ON. · VOX (voice operated transmit) (p. 55) Push [VOX/BK-IN] to turn the VOX function ON and OFF. · "VOX" appears when the VOX function is set to ON. · Audio tone control (p. 89) While M2 is selected with [MENU], push [F4 TCN], select an item with [F1 ] and [F2 ] then rotate the tuning dial to adjust the audio tone. 40 4 RECEIVE AND TRANSMIT I Operating FM q Push a band key to select the desired band. r Rotate the tuning dial to tune a desired signal. · S-meter indicates received signal strength. [TRANSMIT] [TX] indicator Band keys t Push [TRANSMIT] or [PTT] (microphone) to transmit. · The TX indicator lights red. y Speak into the microphone at your normal voice level. · Adjust [MIC GAIN] at this step, if necessary. [MIC GAIN] [AM/FM] Tuning dial Appears u Push [TRANSMIT] or release [PTT] (microphone) to return to receive. D Convenient functions for receive · Preamp and attenuator (p. 48) Push [P. AMP/ATT] several times to set the preamp OFF, preamp 1 ON or preamp 2 ON. · "P. AMP1, " "P. AMP2" or "P. AMP" appears when the preamp 1, preamp 2 or preamp is set to ON, respectively. (depending on operating frequency band) · Noise reduction (p. 53) Push [NR] to turn the noise reduction ON and OFF. · Rotate [NR] control to adjust the noise reduction level. · "NR" appears when the noise reduction is set to ON. Push [P. AMP/ATT] for 1 sec. to set the attenuator ON. · Push [P. AMP/ATT] momentarily to turn the attenuator OFF. · "ATT" appears when the attenuator is set to ON. · Auto notch filter (p. 53) Push [A/NOTCH] to turn the auto or manual notch filter ON and OFF. · Rotate [NOTCH] control to set the attenuating frequency for manual notch operation. · Noise blanker (p. 51) Push [NB] to turn the noise blanker ON and OFF. · "NB" appears when the noise blanker is set to ON. to enter noise blanker set mode. · VSC (voice squelch control) (p. 54) While M2 is selected with [MENU], push [F5 VSC] to turn the VSC function ON and OFF. · The VSC indicator appears when the voice squelch function is set to ON. D Convenient functions for transmit · Speech compressor (p. 58) While M1 is selected with [MENU], push [F3 CMP] to turn the speech compressor ON and OFF. · "COMP" appears when the speech compressor is set to ON. · Transmit quality monitor (p. 57) Push [MONITOR] to turn the monitor function ON and OFF. · "MONI" appears when the monitor function is set to ON. · VOX (voice operated transmit) (p. 55) Push [VOX/BK-IN] to turn the VOX function ON and OFF. · "VOX" appears when the VOX function is set to ON. · Audio tone control (p. 89) While M2 is selected with [MENU], push [F4 TCN], select an item with [F1 ] and [F2 ] then rotate the tuning dial to adjust the audio tone. 41 RECEIVE AND TRANSMIT 4 D Tone squelch operation Tone squelch operation is a method of communications using selective calling. [. . . ] For example, when sending/reading the oldest contents in the 21 MHz band, the code "0703" is used. · Frequency band code Code 01 02 03 04 05 06 07 08 09 10 11 12 Frequency band Frequency range (unit: MHz) 1. 8 1. 800000­ 1. 999999 3. 5 3. 400000­ 4. 099999 7 6. 900000­ 7. 499999 10 9. 900000­10. 499999 14 13. 900000­14. 499999 18 17. 900000­18. 499999 21 20. 900000­21. 499999 24 24. 400000­25. 099999 28 28. 000000­29. 999999 50 50. 000000­54. 000000 144 144. 000000­148. 000000 GENE Other than above · Character's code-- Symbols Character !' + : = > ) ] } _ ASCII code 21 24 26 3F 27 2B 3A 3D 3E 29 5D 7D 5F Character # % ¥ " ` ­ ; < ( [ { | ­ ASCII code 23 25 5C 22 60 2D 3B 3C 28 5B 7B 7C 7E · Register code Code 01 02 03 Registered number 1 (latest) 2 3 (oldest) 98 14 CONTROL COMMAND D Split/Duplex frequency setting The following data sequence is used when sending/reading the split or duplex frequency setting. q X 0 X w X 0 e X r* XX 10 MHz digit: 0 (fixed) 100 Hz digit: 0 (fixed) 100 kHz digit: 0--9 10 kHz digit: 0--9 1 kHz digit: 0--9 1 MHz digit: 0--4 X 1 Hz digit: 0­9 e X 2nd digit: 0­7 *No need to enter for duplex frequency setting. D Repeater tone/tone squelch frequency setting The following data sequence is used when sending/reading the DTCS code and polarity setting. [. . . ]