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Icom IC-756PROII Automatic antenna selection, Dial lock function

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5RECEIVE AND TRANSMIT

■Automatic antenna selection

The transceiver covers 0.1–60 MHz over 10 bands.

Each band key has a band memory which can mem-

orize a selected antenna (ANT1, ANT2, ANT1/RX an-

tenna and ANT2/RX antenna). When you change the

operating frequency beyond a band, the previously

used antenna is automatically selected for the new

band. This function is convenient when you use 2 or 3

antennas.

To use the band memory, enter set mode and conﬁrm

that “Auto” is selected as the [ANT] switch item.

(p. 70)

•When OFF is selected, the [ANT] switch does not function

and [ANT1] is always selected.

•When “Manual” is selected, the [ANT] switch functions,

however, band memory does not function. In this case,

you must select an antenna manually.

•When “Auto” is selected (default setting), the antenna

tuner ON/OFF condition is also memorized in the band

memory.

•When “Auto” or “Manual” is selected, the antenna tuner

ON/OFF condition is consistent with the [ANT] switch.

•Antenna switch selection example

Under the following condition, “Auto” should be se-

lected as the [ANT] switch set mode item.

- When you use 2 antennas.

Under the following conditions, “Manual” should be

selected as the [ANT] switch set mode item.

- When using 1 antenna.

- When using an external antenna selector for more

than 3 antennas (except for receive antenna).

- When using an external antenna tuner.

DEFDEF WIDEWIDE

éè

VOXVOX

OFFOFF

COMPCOMP

OFFOFF

WIDEWIDE

AGCAGC

MIDMID

FMFMSPLITSPLITOffset(HF)Offset(HF) -0.100MHz-0.100MHz

FMFMSPLITSPLITOffset(50M)Offset(50M) -0.500MHz-0.500MHz

SPLITSPLITLOCKLOCK OFFOFF

TunerTuner(Auto(AutoStart)Start) OFFOFF

TunerTuner(PTT(PTTStart)Start) OFFOFF

[ANT][ANT]SwitchSwitch AutoAuto

RTTYRTTYMark FrequencyMark Frequency 21252125

OTHERSOTHERSSETSET

■Dial lock function

The dial lock function prevents changes by accidental

movement of the tuning dial. The lock function elec-

tronically locks the dial.

➥Push [LOCK/SPEECH] to toggle the dial lock func-

tion ON and OFF.

•The [LOCK] indicator lights when the dial lock function

is in use.

[LOCK/SPEECH] switch

[LOCK] indicator

Contents

Main IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY SAVE THIS INSTRUCTION MANUAL. EXPLICIT DEFINITIONS RWARNING HIGH VOLTAGE! NEVERat- TABLE OF CONTENTS r t 3 INSTALLATION AND CONNECTIONS ................... 1420 4 FREQUENCYSETTING ....... 21 24 PANEL DESCRIPTION Page Page Page Page Page Page MICROPHONE CONNECTOR HM-36 SCHEMATIC DIAGRAM CAUTION: Microphone (HM-36) LCD display qr.qqy.pp 11 PANELDESCRIPTION F-2 F-3 F-4 F-5 Screen menu arrangement Pushing [EXIT/SET] several times returns to the start up screen. See p. 64 for set mode arrangement. Rear panel DACC SOCKETS INSTALLA TION AND CONNECTIONS Unpacking Selecting a location Grounding R WARNING: NEVER Required connections Front panel Rear panel Advanced connections Front panel Rear panel Power supply connections CAUTION: NEVER connect Linear amplier connections amplier. CONNECTING THE IC-PW1 Turn OFF the transceivers antenna tuner while tuning the IC-PW1s tuner. IC-PW1 CONNECTING ANON-ICOM LINEAR AMPLIFIER External antenna tuner connection Transverter jack information FSK and AFSK (SSTV) connections FREQUENCY SETTING Initial settings When rst applying power (CPU resetting) 22 4 VFO description MEMO PAD 21.076.5021.076.50 1CWCW USBUSB 4 Direct frequency entry with the keypad Frequency setting with the tuning dial 21.295.00 21.090.00 4 Advanced tuning functions RECEIVE AND TRANSMIT Mode selection Twin PBT operation Notch function Noise reduction Noise blanker DSP lter shape RTTY lter selection RTTY reverse mode RTTY lter/Twin peak lter CW reverse mode CW pitch control IF lter selection IF lter selection Filter passband width setting AGC function AGC time constant selection Selectable AGC time constant (unit: sec.) Setting the AGC time constant Dualwatch operation Scanning during dualwatch Split frequency operation Quick split function 34 RIT and TX Push and hold p.wt q.wt Low shift High shift Monitor function VOX function Using the VOX function Adjusting the VOX function Meter function Analog transmit meter Multi-function digital meter SWR reading Speech compressor Speech compressor Compression level setting Preamp Digital voice recorder Recording a received audio Playing the recorded audio One-touch voice recording One-touch playback Recording a message for transmit Conrming a message for transmit Programming a memory name for transmit Sending a message for transmit Transmit monitor function Transmit level setting RTTY decoder Setting the decoder threshold level RTTY tuning meter 43 Electronic CW keyer [KEYER] switch[CW/RTTY] switch SENDSEND EDITEDIT 001001 CW KEYCW KEY MEMORY KEYERMEMORY KEYER VFOVFO CWCW Memory keyer Programming the memory keyer Transmitting memory keyer contents Setting the contact (serial) number Spectrum scope screen Spectrum scope during transmitting Maximum level hold function Automatic antenna selection Antenna switch selection example Dial lock function Repeater operation Setting the repeater tone Tone squelch operation tWhen the received signal includes a matching tone, squelch opens and the signal can be heard. Setting the tone squelch tone tPush [EXIT/SET] to exit tone set mode. Available tone squelch tones (Unit: Hz) Store tone squelch frequencies and ON/OFF settings in memory channels for easy recall. Antenna tuner operation CAUTION: NOTES: Optional external tuner operation AH-4/AH-3 HF AUTOMATIC ANTENNA TUNER RWARNING: HIGH VOLTAGE! NEVER AH-4/AH-3 operation MEMORY OPERATION then F-INPENT Memory channels eTo return to VFO mode, push [VFO/MEMO] again. Memory channel screen Selecting a memory channel using the memory channel screen Conrming programmed memory channels Setting a memory channel as a select memory 6 53 MEMORYOPERATION SSB MW Frequency transferring Transferring in VFO mode Transferring in memory mode 6 55 MEMORYOPERATION M-CL eSelect the desired memory channel. Memo pads Writing frequencies and operating modes into memo pads TEMPORARY PAD MEMO PADS Calling up a frequency from a memo pad SCANS Scan types Squelch condition Preparation Channels 7 Programmed scan operation wSelect VFO mode. eSelect the desired operating mode. uSet center frequency of the F span. The operating mode can also be changed while scan- ning. rPush [(F-5)SCAN] to select the scan screen. 7 59 Fine programmed scan/ne F scan tPush [(F-3)FINE] to start a ne scan. FINE PROGRAM SCAN or FINE F SCAN ap- pears. 7 Select memory scan operation 12 12 1212 12 12 1212 7 Scan set mode Scan speed Scan resume condition Tone scan CLOCK AND TIMERS Setting the current time rSet the current time using the tuning dial. TIMEset Push [SET] blinks. tPush [(F-4)SET] to enter the set time. 8 Setting power-off period Timer operation Setting power-on time 64 SET MODE F5 F-1 EXIT/SET OTHERS OTHERS Level set mode SSSSBB TTxx TToonnee ((BBaassss)) SSSSBB TTxx TToonnee ((TTrreebbllee)) MMoonniittoorr LLeevveell SSiiddee TToonnee LLeevveell Display set mode CCoonnttrraasstt ((LLCCDD)) BBaacckklliigghhtt ((LLCCDD)) HHoorriizzoonn BBaacckklliigghhtt((SSwwiittcchheess)) Display set mode (continued) DSP lter set mode Timer set mode TTiimmee ((NNooww)) TTiimmeerr FFuunnccttiioonn PPoowweerr--OOFFFF ppeerriioodd PPoowweerr--OONN TTiimmeerr sseett QQuuiicckk DDuuaallwwaattcchh QQuuiicckk SSPPLLIITT RRFF//SSQQLL CCoonnttrrooll FFMM SSPPLLIITTOOffffsseett((HHFF)) FFMM SSPPLLIITTOOffffsseett((5500MM)) TTuunneerr ((AAuuttoo SSttaarrtt)) TTuunneerr ((PPTTTT SSttaarrtt)) RRTTTTYY MMaarrkk FFrreeqquueennccyy RRTTTTYY SShhiifftt WWiiddtthh RRTTTTYY KKeeyyiinngg PPoollaarriittyy RRTTTTYY DDeeccooddee UUSSOOSS RRTTTTYY DDeeccooddee NNeeww LLiinnee CCooddee SSPPEEEECCHH LLaanngguuaaggee SSPPEEEECCHH SSppeeeedd SSPPEEEECCHH SS--LLeevveell MMAAIINN DDIIAALL AAuuttoo TTSS SSSSBB//CCWW SSyynncchhrroonnoouuss TTuunniinngg CCWW NNoorrmmaall SSiiddee MMIICC UUpp//DDoowwnn SSppeeeedd QQuuiicckk RRIITT//TTXX CClleeaarr EExxtteerrnnaall KKeeyyppaadd CCII--VV BBaauudd RRaattee CCII--VV AAddddrreessss CCII--VV TTrraannsscceeiivvee CCII--VV wwiitthh IICC--773311 OPTION INSTALLATION CAUTION: VOICE SYNTHESIZER UNIT Opening the transceivers case UT-102 MAINTENANCE TRANSMIT SCAN Troubleshooting solve it through the use of this chart, contact your near- est Icom Dealer or Service Center. 11 Fuse replacement CAUTION: Clock backup battery replacement 11 Tuning dial brake adjustment Frequency calibration (approximate) CAUTION: INTERNAL VIEWS Top view Bottom view 79 CONTROL COMMAND mini-plug cable FE FE E0 64 FA FD CI-V connection example Data format 13 Command table (continued) To send/read memory contents Band stacking register Channel code for memory keyer Characters code for my call FM split frequency (HF/50 MHz) setting SPECIFICATIONS General Transmitter Receiver Antenna tuner OPTIONS