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Icom IC-756PROIII, Instruction Manual

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INSTRUCTION MANUAL

HF/50 MHz
ALL MODE TRANSCEIVER

This device complies with Part 15 of the FCC rules. Operation is sub-
ject 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.

Summary of Contents for IC-756PROIII

Page 1: ...ice complies with Part 15 of the FCC rules Operation is sub ject 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 ...

Page 2: ...o 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 756PROIII D FEATURES 30 dBm class IP3 at 14 MHz band and further improved 3rd order IMD character istics Real time spectrum scope with mini scope function Boudot RTTY demodulator and RTTY transmit message memory Selectable SSB transmission passband width ...

Page 3: ...damaged RNEVER operate or touch the transceiver with wet hands This may result in an electric shock or damage to the transceiver AVOID using or placing the transceiver in areas with temperatures below 10 C 14 F or above 50 C 122 F Be aware that temperatures on a vehicle s dashboard can exceed 80 C 176 F resulting in per manent damage to the transceiver if left there for ex tended periods AVOID pla...

Page 4: ...transmit operation 32 DTransmitting 32 DMicrophone gain adjustment 32 4 RECEIVE AND TRANSMIT 33 54 Operating SSB 33 DConvenient functions for receive 33 DConvenient functions for transmit 34 DAbout 5 MHz band operation USA version only 34 Operating CW 35 DConvenient functions for receive 35 DConvenient functions for transmit 36 DAbout CW reverse mode 36 DCW side tone function 36 DAbout CW pitch co...

Page 5: ...eration 85 Select memory scan operation 86 Setting select memory channels 86 Scan set mode 87 Tone scan 87 10 ANTENNA TUNER OPERATION 88 90 Automatic antenna selection 88 Antenna tuner operation 89 Optional external tuner operation 90 11 CLOCK AND TIMERS 91 93 Time set mode 91 DSetting the current time 92 DClock2 function activity 92 DClock2 offset setting 92 DTimer function activity 92 DSetting p...

Page 6: ... key and straight key operation can be made in keyer set mode p 43 A straight key jack is separately available on the rear panel See KEY on p 11 Keyer polarity dot and dash can be reversed in keyer set mode p 43 4 channel memory keyer is available for your conve nience p 40 t MICROPHONE CONNECTOR MIC Accepts the supplied or optional microphone See p 116 for appropriate microphones See p 18 for mic...

Page 7: ... 0 S RF METER p 31 Shows the signal strength while receiving Shows the relative output power SWR ALC or compres sion levels while transmitting 1 MONITOR SWITCH MONITOR p 70 Monitors your transmitted IF signal The CW side tone functions regardless of the MONI TOR switch setting in CW mode The MONITOR indicator in this switch lights green when the function is activated 2 ANTENNA TUNER SWITCH TUNER p...

Page 8: ...t p 31 Switches the multi function digital meter ON and OFF when pushed for 1 sec Selects one of 2 receive RF preamps or bypasses them p 57 P AMP1 activates 10 dB preamp P AMP2 activates 16 dB high gain preamp What is the preamp The preamp amplifies received signals in the front end cir cuit to improve the S N ratio and increase the sensitivity Se lect P AMP1 or P AMP2 when receiving weak signals ...

Page 9: ...sor ON and OFF in SSB mode p 68 Switches the narrow middle or wide transmit filter when pushed for 1 sec What is the speech compressor The speech compressor compresses the transmitter audio input to increase the average audio output level Therefore talk power is increased This function is effective for long dis tance communication or when propagation conditions are poor Turns the 1 4 function ON a...

Page 10: ...n the channel R4 of the voice memory Push for 1 sec to record the receiving signal con tents into the channel R4 max 15 sec of the voice memory 6 TUNING DIAL p 25 Changes the displayed frequency selects set mode settings etc 7 LOCK SPEECH SWITCH LOCK SPEECH Push momentarily to toggle the dial lock function ON and OFF p 65 Push for 1 sec to announce the S meter indica tion and the selected readout ...

Page 11: ...ng the operating fre quency 4 NOTCH SWITCH NOTCH p 64 Switches the notch function between auto man ual and OFF in SSB and AM modes Turns the manual notch function ON and OFF when pushed in CW mode Turns the auto notch function ON and OFF when pushed in FM mode AN appears on the display when auto notch is in use MN appears on the display when manual notch is in use The NOTCH indicator in this switc...

Page 12: ...readout memory channel con tents when pushed for 1 sec in memory mode The channel becomes a blank channel This switch does not function in VFO mode 3 MEMORY WRITE SWITCH MW p 79 Stores the selected readout frequency and operat ing mode into the displayed memory channel when pushed for 1 sec This function is available both in VFO and memory modes 4 MEMORY UP DOWN SWITCHES Y Y Z Z p 77 Push to selec...

Page 13: ...ency after input an offset 4 MHz in 1 kHz steps 9 DUALWATCH SWITCH DUALWATCH p 63 Turns the dualwatch function ON and OFF when pushed Turns the dualwatch function ON and equalizes the sub readout frequency to the main readout when pushed for 1 sec Quick dualwatch function The quick dualwatch function can be turned OFF using set mode p 98 0 MAIN SUB CHANGE SWITCH CHANGE Switches the frequency and s...

Page 14: ...e operating frequency Outline characters are used for non accessing readout o CLOCK READOUT p 92 Shows the current time Dualtime indication is available 0 RTTY TUNING INDICATOR p 47 Shows the tuning level in RTTY mode 1 QUICK TUNING INDICATOR p 26 Appears when the quick tuning step function is in use 2 PASSBAND WIDTH INDICATOR pgs 60 61 Graphically displays the passband width for twin PBT operatio...

Page 15: ...9 9 9 9 9 M H z 2 9 9 9 9 9 9 M H z MEMO MEMO F SELECT SELECT F SPAN F SPAN SET SET THRESHOLD 9 RTTY RTTY FIL FIL ON ON AGC AGC MID MID RTTY DECODE RTTY DECODE MEMORY KEYER MEMORY KEYER RTTY Decode Monitor RTTY Decode Monitor 45bps BAUDOT Mark 2125 Shift 170 45bps BAUDOT Mark 2125 Shift 170 UnShift On Space support SET OTHERS UnShift On Space support SET OTHERS New Line Code selectable SET OTHERS ...

Page 16: ...on the front panel can be used for a straight key or external electronic keyer Deactivate the internal electronic keyer in keyer set mode p 43 If you use an external electronic keyer make sure the voltage retained by the keyer is less than 0 4 V when the key is ON u CI V REMOTE CONTROL JACK REMOTE p 110 Connects a PC via the optional CT 17 CI V LEVEL CONVERTER for external control of the transceiv...

Page 17: ...ound to prevent electri cal shocks TVI BCI and other problems Microphone HM 36 q UP DOWN SWITCHES UP DN Change the selected readout frequency or memory channel Continuous pushing changes the frequency or memory channel number continuously While pushing XFC the transmit readout frequency can be controlled while in spilt frequency operation The UP DN switch can simulate a key paddle Preset in the ke...

Page 18: ... or electric shock Antenna connection For radio communications the antenna is of critical im portance along with output power and sensitivity Se lect antenna s such as a well matched 50 Ω antenna and feedline 1 5 1 or better of Voltage Standing Wave Ratio VSWR is recommended for your desired band Of course the transmission line should be a coaxial cable When using 1 antenna use the ANT1 connector ...

Page 19: ... 21 24 28 GENE 50 F INP MW M CL TS XFC TIMER POWER TRANSMIT PHONES ELEC KEY MIC TUNER MONITOR NB NR AF BAL NR RF SQL MIC GAIN RF POWER COMP KEY SPEED BK IN DELAY HF 50MHz TRANSCEIVER CW KEY A straight key can be used when the internal electronic keyer is turned OFF in keyer set mode p 43 MICROPHONES p 116 SM 20 HM 36 GROUND p 13 Use the heaviest gauge wire or strap available and make the connectio...

Page 20: ... TS XFC TIMER POWER TRANSMIT PHONES ELEC KEY MIC TUNER MONITOR NB NR AF BAL NR RF SQL MIC GAIN RF POWER COMP KEY SPEED BK IN DELAY HF 50MHz TRANSCEIVER HEADPHONES MIC The AFSK modulation signal can be input from MIC p 19 ANTENNA 1 2 pgs 17 18 Connects a linear amplifier antenna selector etc EXTERNAL SPEAKER p 116 ACC SOCKETS pgs 19 20 RX ANTENNA TRANSVERTER p 18 Connects a transverter for V UHF ba...

Page 21: ...power socket A DC power supply AC outlet AC cable 30 A fuses Supplied DC power cable 13 8 V at least 23 A Black _ Red Transceiver CONNECTING A VEHICLE BATTERY 12 V battery Supplied DC power cable red _ black Crimp Solder Grommet NOTE Use terminals for the cable connections R WARNING NEVER con nect to a battery without supplied DC fuses otherwise a fire hazard may occur NEVER connect the transceive...

Page 22: ...ect the cable to the 7 pin ACC 2 jack Coaxial cable supplied with the IC PW1 EURO Coaxial cable optional Connect INPUT2 if necessary CONNECTING A NON ICOM LINEAR AMPLIFIER R WARNING Set the transceiver output power and linear amplifier ALC output level referring to the linear amplifier in struction manual The ALC input level must be in the range 0 V to 4 V and the transceiver does not accept posit...

Page 23: ...utput e Frequency up down u GND Microphone ground i Main readout AF output varies with AF BAL MIC FUNCTION DESCRIPTION Pin No w 8 V DC output Max 10 mA e Frequency up Ground Frequency down Ground through 470 Ω r Squelch open Low level Squelch closed High level Microphone connector information When 2 to 13 8 V is applied to pin 6 of ACC 2 the XVERT jack is activated for transverter operation and th...

Page 24: ...t the SQUELCH line when required Terminal Node Controller TNC or Scan converter MIC connector Front panel view 1 2 3 4 5 6 7 8 FSK and AFSK SSTV connections To connect a terminal unit TNC or scan converter refer to the diagram below For RTTY operation Narrow filter settings may not pass RTTY signals Be sure to select the appropriate IF filter settings corresponding to the signal width p 61 FSK RTT...

Page 25: ...l Approx 100 mV rms AF detector output Output impedance 4 7 kΩ 5 AF Fixed regardless of AF position Output level 100 300 mV rms in default settings see notes below 6 SQLS Squelch output SQL open Less than 0 3 V 5 mA Goes to ground when squelch opens SQL closed More than 6 0 V 100 µA 7 13 8 V 13 8 V output when power is ON Output current Max 1 A Connected in parallel with ACC 2 pin 7 Control voltag...

Page 26: ... and unstable after turning power ON This is normal and does not indicate any equipment mal function CW Max clockwise CCW Max counterclockwise When first applying power CPU resetting POWER F INP M CL 1 FAST in FM mode 2 Appears in some modes POWER OFF TUNER MONITOR NB NR OFF AF Max CCW RF SQL 12 o clock MIC GAIN 10 12 o clock RF POWER Max CW ANT 1 METER Po P AMP 1 ATT OFF PBT CLR OFF NOTCH OFF BAL...

Page 27: ... frequency or mode is changed the memory channel does not memorize the new frequency or operating mode When the memory channel is selected from another memory channel or VFO mode the memorized fre quency and operating mode appear EXAMPLE METER METER Po Po ANT ANT 1 METER METER Po Po ANT ANT 1 METER METER Po Po ANT ANT 1 METER METER Po Po ANT ANT 1 BW BW 2 4k 2 4k SFT SFT 0 VFO VFO FIL2 FIL2 USB US...

Page 28: ...USB USB qr qot pp 14 100 00 14 100 00 BPF BPF 1 VFO VFO BW BW 500 500 SFT SFT 0 FIL2 FIL2 USB USB TX TX CW CW qr qpp pp 14 195 00 14 195 00 VFO VFO 1 BW BW 2 4k 2 4k ANT ANT 1 METER METER Po Po ANT ANT 1 METER METER Po Po qw pp 12 00 qw pp 12 00 VFO indicator Memory channel number VFO MEMO Selecting VFO memory mode Push MAIN SUB to select access to the main or sub readout The sub readout frequency...

Page 29: ...Hz CW 10 140000 MHz CW 14 MHz 14 100000 MHz USB 14 200000 MHz USB 14 050000 MHz CW 18 MHz 18 100000 MHz USB 18 130000 MHz USB 18 150000 MHz USB 21 MHz 21 200000 MHz USB 21 300000 MHz USB 21 050000 MHz CW 24 MHz 24 950000 MHz USB 24 980000 MHz USB 24 900000 MHz CW 28 MHz 28 500000 MHz USB 29 500000 MHz USB 28 100000 MHz CW 50 MHz 50 100000 MHz USB 50 200000 MHz USB 51 000000 MHz FM General 15 00000...

Page 30: ...2 4k 2 4k SFT SFT 0 VFO VFO FIL2 FIL2 USB USB TX TX 1 CW CW wq wot pp 21 076 50 21 076 50 qw pp 12 00 12 00 METER Po ANT 1 BW BW 2 4k 2 4k SFT SFT 0 VFO VFO FIL2 FIL2 USB USB TX TX 1 CW CW wq wpp pp 21 076 50 21 076 50 qw pp 12 00 12 00 Band keys Tuning dial The transceiver has a keypad for direct frequency entry as described right q Push F INP ENT appears w Input the desired frequency Push GENE t...

Page 31: ...qw pp 12 00 12 00 Quick tuning indicator TS Tuning dial D DSelecting kHz step q Push TS momentarily to turn the quick tuning step ON Z appears when the quick tuning function ON w Push TS for 1 sec to enter the tuning step set ting display Selected tuning steps for all modes appear e Select the desired operating mode r Rotate the tuning dial to select the desired tuning step from 0 1 1 5 9 10 12 5 ...

Page 32: ...B USB USB USB USB USB FIL2 FIL2 qr qot ppp qr wpt ppp 14 100 00 14 100 00 14 100 00 14 100 00 VFO VFO ATT ATT 0FF 0FF METER METER Po Po P AMP P AMP 1 VOX VOX OFF OFF COMP COMP OFF OFF WIDE WIDE AGC AGC MID MID ANT ANT 1 qw pp 12 00 12 00 1 Hz step indicator TS Tuning dial D D1 4 tuning function SSB data CW RTTY only While operating in SSB data CW RTTY the 1 4 tuning function is available for criti...

Page 33: ... RIT TX Clear OFF SSB CW Synchronous Tuning OFF CW Normal Side LSB External Keypad Auto Tuning dial F 2 Z F 5 OTHERS F 1 Y EXIT SET D DBand edge warning beep When selecting a frequency that lies outside of a band s specified frequency range a warning beep sounds This function can be turned OFF in set mode if de sired q Push EXIT SET several times to close a multi function screen if necessary w Pus...

Page 34: ...eration After USB or LSB is selected push SSB to toggle be tween USB and LSB After USB or LSB is selected push SSB for 1 sec to select USB D or LSB D mode respectively Selecting CW RTTY mode Push CW RTTY to select CW or RTTY After CW or RTTY is selected push CW RTTY to tog gle between CW and RTTY After CW or RTTY is selected push CW RTTY for 1 sec to toggle between CW and CW reverse or RTTY and RT...

Page 35: ...t Rotating RF SQL past the threshold point invokes the S meter squelch this allows you to set a minimum signal level needed to open the squelch When setting as RF gain squelch control When functioning as RF gain control Squelch is fixed open SSB CW RTTY only When functioning as squelch control RF gain is fixed at maximum While rotating the RF gain control noise may be heard This comes from the DSP...

Page 36: ...D P HOLD MULTI FUNCTION METER MULTI FUNCTION METER ANT ANT 1 COMP COMP OFF OFF WIDE WIDE METER METER Po Po P AMP P AMP 1 AGC AGC MID MID ATT ATT OFF OFF VOX VOX OFF OFF 0 5 10 15 20 20 dB qw pp 12 00 12 00 METER DISPLAY MEASUREMENT INDICATION Po Indicates the relative RF output power in SWR Indicates the SWR over the transmission line ALC Indicates the ALC level When the meter movement shows the i...

Page 37: ... 25 50 100 20 1 0 1 5 2 3 1 5 9 20 40 60dB dB ALC zone METER MIC GAIN Before transmitting monitor your selected oper ating frequency to make sure transmitting won t cause interference to other stations on the same frequency It s good Amateur practice to listen first and then even if nothing is heard ask is the frequency in use once or twice before you being operating on that frequency D DTransmitt...

Page 38: ...ttenuator p 57 Push ATT several times to set the attenuator in 6 dB steps ATT and attenuation level appear when the attenua tor is set to ON Noise blanker p 64 Push NB switch to turn the noise blanker ON and OFF Noise blanker indicator in NB switch lights when the noise blanker is set to ON Push NB for 1 sec to enter the noise blanker level set mode then rotate the tuning dial to ad just the thres...

Page 39: ...peration USA version only Operation on the 5 MHz band is allowed on 5 discrete frequencies and must adhere to the following USB mode Maximum of 50 watts ERP Effective Radiated Power 2 8 kHz bandwidth It is the operator s responsibility to set all controls so that the transmission in this band meets the stringent conditions under which we may use these frequencies NOTE We recommend that you store t...

Page 40: ...ttenuator p 57 Push ATT several times to set the attenuator in 6 dB steps ATT and attenuation level appear when the attenua tor is set to ON Noise blanker p 64 Push NB switch to turn the noise blanker ON and OFF Noise blanker indicator in NB switch lights when the noise blanker is set to ON Push NB for 1 sec to enter the noise blanker level set mode then rotate the tuning dial to ad just the thres...

Page 41: ...nce or twice to select CW mode w Push CW RTTY for 1 sec to select CW or CW R mode Check the interfering tone Push for 1 sec BFO CW R mode USB side BFO Desired signal CW mode LSB side Interference Desired signal Interference CW RTTY CW RTTY 4 D DCW side tone function When the transceiver is in the receive condition and the break in function is OFF p 67 you can listen to the tone of your CW signal w...

Page 42: ...otate CW PITCH to suit your preference Adjustable within 300 to 900 Hz in 25 Hz steps The filter set mode screen graphically displays the CW pitch operations See at left FILTER FILTER CW CW FI FIL 1 FI FIL 2 FI FIL 3 1 2 k 1 2 k 5 0 0 5 0 0 2 5 0 2 5 0 PBT2 PBT2 PBT1 PBT1 4 5 0 7 0 0 9 5 0 4 5 0 7 0 0 9 5 0 BK IN BK IN OFF OFF AGC AGC MID MID 1 4 1 4 OFF OFF BW BW DEF DEF CW PITCH Higher Frequency...

Page 43: ...ory keyer send screen ABC ABC 123 123 MEMORY KEYER MEMORY KEYER C Q T E S T C Q T E S T D E I C O M I C O M C Q T E S T C Q T E S T D E I C O M I C O M T E S T T E S T Q R Z Q R Z M 1 M 1 M 2 M 2 M 3 M 3 M 4 M 4 C F M T U C F M T U U R 5 N N U R 5 N N 0 0 1 0 0 1 B K B K ABC ABC Memory keyer edit screen KEYER 001 KEYER 001 Number Style Number Style Normal Normal Coun Count Up Trigger t Up Trigger ...

Page 44: ...ansmitting repeatedly Set the repeat interval of the memory keyer to 1 60 sec 1 sec steps See p 42 for keyer set mode To count down the contact number push F 5 1 For your information When an external keypad is connected to the pin 3 and pin 7 of the MIC connecter the programmed contents M1 M4 can be transmitted without open ing the memory keyer screen See page 104 for details y Push EXIT SET twice...

Page 45: ...er automatically increments by 1 This function is only available for one memory keyer channel at a time Memory keyer channel M2 used by default u Select the desired character by rotating the tuning dial or by pushing the band key for number input Push F 1 Ω Ω or F 2 for cursor movement Push F 3 DEL to delete the selected character Push F 4 SPACE to input a space is for contact numbers and can be i...

Page 46: ...r channel set above Rotate the tuning dial to change the number or push F 3 001CLR for 1sec to reset the current number to 001 This menu is used to set the contest serial number and count up trigger etc Setting the contact serial number Contact number can be automatically transmitted from one of the memory keyer channels The Morse cut numbers can be used as the contact numbers The maximum number f...

Page 47: ...D only 4 This set mode is used to set the CW side tone mem ory keyer repeat time dash weight paddle specifica tions keyer type etc Setting the electronic keyer q Push EXIT SET several times if necessary w Push CW RTTY to select CW mode e Push F 3 KEYER then EXIT SET to select keyer set mode r Push F 4 CW KEY to select memory keyer set mode t Push F 1 Y Y or F 2 Z Z to select the desired set item y...

Page 48: ...d Push F 3 DEF for 1 sec to select a default setting default Normal K Ke ey ye er r T Ty yp pe e Keyer type This item selects the keyer type for ELEC KEY con nector on the front panel ELEC KEY BUG KEY and Straight key can be se lected Push F 3 DEF for 1 sec to select a default setting default ELEC KEY M MI IC C U Up p D Do ow wn n K Ke ey ye er r Microphone s UP DN switches keyer This item allows ...

Page 49: ... AMP several times to set the preamp OFF preamp 1 ON or preamp 2 ON P AMP1 or P AMP2 appears when the preamp 1 or preamp 2 is set to ON respectively depending on operating frequency band Attenuator p 57 Push ATT several times to set the attenuator in 6 dB steps ATT and attenuation level appear when the attenua tor is set to ON Noise blanker p 64 Push NB switch to turn the noise blanker ON and OFF ...

Page 50: ...RTTY filter width from 1 kHz 500 Hz 350 Hz 300 Hz and 250 Hz Push F 3 DEF for 1 sec to select a default value y Push F 2 Z Z to select twin peak filter item The received audio volume may become greater when the twin peak filter is turned ON u Rotate the tuning dial to turn the twin peak filter function ON or OFF i Push EXIT SET to exit the RTTY filter set mode BW BW 350 350 SFT SFT 0 VFO VFO FIL2 ...

Page 51: ... THIS IS JA3YUA JA3YUA OSAKA JAPAN CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN THRESHOLD THRESHOLD 9 AGC AGC MID MID 1 4 1 4 OFF OFF RTTY RTTY FIL FIL ON ON MENU1 MENU1 HLD CLR HLD CLR TX MEM TX MEM ADJ ADJ WIDE WIDE RTTY RTTY De...

Page 52: ...1 085 00 TX TX VFO VFO 1 USB USB CW CW CW CW FIL2 FIL2 RT1 RT1 RT2 RT2 RT3 RT3 0 qr qpp pp qr qpp pp 12 00 12 00 RT4 RT4 1 4 5 8 1 4 5 8 RTTY MEMORY RTTY MEMORY RT1 RT1 RT2 RT2 RT3 RT3 RT4 RT4 DE DE ICOM ICOM ICOM ICOM K QSL QSL UR UR 599 599 599 599 BK BK QSL QSL DE DE ICOM ICOM ICOM ICOM UR UR 599 599 599 599 BK BK DE DE ICOM ICOM ICOM ICOM ICOM K ICOM K F 1 RT1 F 4 RT4 F 1 RT5 F 4 RT8 EXIT SET ...

Page 53: ...r by pushing the band key for number input Push F 1 Ω Ω or F 2 for cursor movement Push F 3 DEL to delete the selected character Push F 4 SPACE to input a space i Repeat step u until the desired contents are input o Push F 5 RT1 8 to select the next memory channel and repeat step u for character input if desired 0 Push EXIT SET to set the contents and exit RTTY memory edit screen Key selection ABC...

Page 54: ... F C CR R L LF F CR LF and CR LF default C CR R L LF F CR LF only D DRTTY decoder set mode This set mode is used to set the decode USOS func tion etc Setting the contents q Push EXIT SET several times if necessary w Push CW RTTY to select RTTY mode e Push F 3 DECODE then F 1 MENU1 to select RTTY decode menu 2 r Push F 4 SET to select RTTY decode set mode t Push F 1 Y Y or F 2 Z Z to select the des...

Page 55: ...st the noise reduction level Noise reduction indicator in NR switch lights when the noise reduction is set to ON Noise blanker p 64 Push NB switch to turn the noise blanker ON and OFF Noise blanker indicator in NB switch lights when the noise blanker is set to ON Push NB for 1 sec to enter the noise blanker level set mode then rotate the tuning dial to ad just the threshold level Notch filter p 64...

Page 56: ... or preamp 2 is set to ON respectively depending on operating frequency band Attenuator p 57 Push ATT several times to set the attenuator in 6 dB steps ATT and attenuation level appear when the attenua tor is set to ON Notch filter p 64 Push NOTCH switch to turn the auto notch func tion ON and OFF Rotate NOTCH control to set the attenuating fre quency for manual notch operation Notch indicator in ...

Page 57: ...00 00 14 100 00 14 100 00 14 100 00 1 1 VFO VFO SPLIT SPLIT TX TX TONE TONE TONE TONE ANT ANT 1 METER METER Po Po ATT ATT OFF OFF P AMP P AMP 1 qw pp 12 00 Tone encoder is auto matically turned ON Shifted frequency appears AM FM XFC Tuning dial VFO MEMO SPLIT Band keys D DSetting the repeater tone Some repeaters require subaudible tones to be ac cessed Subaudible tones are superimposed over your n...

Page 58: ...l strength To open the squelch manually push XFC i Operate the transceiver in the normal way o To cancel the tone squelch push TONE to clear TSQL Store tone squelch frequencies and ON OFF settings in memory channels for easy recall CONVENIENT T SCAN T SCAN é è DEF DEF TONE FREQUENCY TONE FREQUENCY 88 5Hz 88 5Hz 88 5Hz 88 5Hz T SQL TONE T SQL TONE REPEATER TONE REPEATER TONE AGC AGC FAST FAST VOX V...

Page 59: ...te the tuning dial to tune into the desired signal and decoded correctly Also use the tuning indicator of the software During SSB data mode 1 4 tuning function can be used for critical tuning y Operate the PC software to transmit When operating in SSB data mode adjust the AF output level from PC so that the ALC meter reading doesn t go outside the ALC zone NOTE When SSB data mode is selected the a...

Page 60: ...FO VFO SUB SUB MARKER MARKER ATT ATT 10dB 10dB HOLD HOLD Grid Grid 2 5k 2 5k 10dB 10dB 12 5k 12 5k 12 5k 12 5k SPECTRUM SCOPE SPECTRUM SCOPE ANT ANT 1 METER METER Po Po ATT ATT OFF OFF VOX VOX OFF OFF COMP COMP OFF OFF WIDE WIDE AGC AGC MID MID P AMP P AMP 1 HOLD HOLD SET SET SPAN SPAN ATT ATT MARKER MARKER qw pp 12 00 Appears when the marker is out of range Sub readout or TX marker Appears when t...

Page 61: ...ode e Push F 1 Y Y or F 2 Z Z to select the desired set item r Rotate the tuning dial to select the desired condi tion Push F 3 DEF for 1 sec to select a default condition t Push EXIT SET to exit spectrum scope set mode DEF DEF é è VOX VOX OFF OFF COMP COMP OFF OFF WIDE WIDE AGC AGC MID MID Scope Scope during during Tx Tx ON ON Max Max Hold Hold ON ON SCOPE SCOPE SET SET F 2 Z F 1 Y EXIT SET F 3 D...

Page 62: ...strong electric fields distortion sometimes results In such cases use the transceiver with the P AMP 1 or P AMP OFF setting The P AMP 2 is most effective when Used on bands above 24 MHz and when electric fields are weak Receive sensitivity is insufficient during low gain or while using a narrow band antenna such as small loop a Beverage antenna or a short Yagi antenna etc is used P AMP Attenuator ...

Page 63: ...p 12 00 Appear RIT RIT CLEAR RIT TX RIT When RIT and TX are ON at the same time the RIT TX control shifts both the transmit and re ceive frequencies from the displayed frequency at the same time Calculate function The shift frequency of the RIT or TX function can be added subtracted to the displayed frequency While displaying the RIT and or TX shift fre quency push RIT or TX for 1 sec Practical ex...

Page 64: ...a default value u Push AGC to select slow time constant i Rotate the tuning dial to set the desired time con stant for AGC SLOW AGC time constant can be set between 0 1 to 8 0 sec depends on mode or turned OFF Push F 3 DEF for 1 sec to select a default value o Select another mode other than FM Repeat steps e to i if desired 0 Push EXIT SET to exit the AGC set mode screen DEF DEF SFT SFT 0 FIL2 FIL...

Page 65: ...mode and when the RTTY filter is turned ON Only the inner control may function in this case IF shift is adjustable in 20 40 Hz steps in RTTY RTTY filter is turned ON or 150 300 500 Hz steps in AM TWIN PBT should normally be set to the center posi tions PBT setting is cleared when there is no interfer ence When PBT is used the audio tone may be changed Not available for FM mode While rotating TWIN ...

Page 66: ...ial to set the desired passband width The passband width can be set within the range as shown right table Push F 3 DEF for 1 sec to select the default value y Repeat steps r to t if desired u Push EXIT SET to exit the filter set mode screen The PBT shift frequencies are cleared when the passband width is changed This filter set mode screen graphically displays the PBT shift frequencies and CW pitc...

Page 67: ...et mode e Push F 3 DSP to enter the DSP filter set mode r Push one of F 2 SSB FIL or F 4 CW FIL to select the desired DSP filter shape from sharp and soft for each SSB or CW mode respectively t Push EXIT SET twice to exit the set mode AGC AGC MID MID BK IN BK IN OFF OFF 1 4 1 4 OFF OFF DSP FILTER SET SSB SSB SHARP SHARP CW CW SHARP SHARP SSB FIL SSB FIL CW FIL CW FIL SSB SSB SOFT SOFT CW CW SOFT S...

Page 68: ...g the scan edges may not be necessary w Push SPLIT to turn the split frequency function ON appears e Select VFO mode for the main readout r Set the desired operating frequency for the main readout t Push DUALWATCH for 1 sec The main and sub readout frequencies are equalized and the dualwatch function is turned ON y Push F 5 SCAN to select the scan screen Push EXIT SET several times to close a mult...

Page 69: ...oise may be heard This comes from the DSP unit and does not indicate an equipment malfunction Unwanted tone frequency Desired signal AF Desired signal AF Particular frequency is attenuated Auto notch OFF Auto notch ON NOTCH control NOTCH switch Noise blanker The noise blanker eliminates pulse type noise such as from car ignitions The noise blanker is not avail able for FM mode q Push NB to turn th...

Page 70: ...icks out desired signals which are buried in noise The received signals are converted to digital signals and then the desired signals are separated from the noise q Push the NR switch to turn the noise reduction ON NR indicator lights w Rotate the NR control to adjust the noise reduc tion level e Push the NR switch to turn the noise reduction OFF NR indicator lights off Deep rotation of the NR con...

Page 71: ...turning to receive Select the VOX delay item using F 1 Y Y or F 2 Z Z Rotate the tuning dial u If the receive audio from the speaker switches to transmit adjust the anti VOX to the point where it has no effect BW BW 2 4k 2 4k SFT SFT 0 FIL2 FIL2 USB USB TX TX VFO VFO USB USB USB USB USB USB FIL2 FIL2 qr qot pp qr wpt pp 14 100 00 14 100 00 14 100 00 14 100 00 1 1 VFO VFO é è DEF VOX ANT ANT 1 COMP...

Page 72: ...dle rotate KEY SPEED to ad just the keying speed BK IN BK IN DELAY KEY SPEED During full break in operation the transceiver auto matically selects transmit while keying and returns to receive immediately after keying is finished q Push CW RTTY to select CW or CW R mode w Push BK IN several times to turn the full break in function ON BK IN FULL appears When using a paddle rotate KEY SPEED to ad jus...

Page 73: ...ch compressor ON and OFF e Push COMP for 1 sec to select between narrow middle or wide transmit filter Transmit filter width see above for details NAR 2 0 kHz MID 2 4 kHz WIDE 2 8 kHz 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 countercl...

Page 74: ... are ON at the same time the RIT TX control shifts both the transmit and re ceive frequencies from the displayed frequency at the same time Calculate function The shift frequency of the RIT or TX function can be added subtracted to the displayed frequency While displaying the RIT and or TX shift fre quency push RIT or TX for 1 sec Practical example When you find a DX station on 21 025 MHz CW and t...

Page 75: ...m t Adjust monitor gain using the tuning dial Pushing F 3 DEF for 1 sec sets the selected item to the default value y Push EXIT SET twice to exit level set mode Use headphones to prevent feedback Set the transmit tone settings to the 0 dB positions to check the unaltered characteristics of transmit ter or microphone BW BW 2 4k 2 4k SFT SFT 0 FIL2 FIL2 USB USB TX TX VFO VFO USB USB USB USB USB USB ...

Page 76: ... lock func tions to change the transmit frequency only The split lock function cancels the dial lock function while push ing XFC during split frequency operation The dial lock s effectiveness during split frequency op eration can be selected in the set mode for both re ceive and transmit frequencies or only the receive frequency p 100 CONVENIENT CONVENIENT 1 SPLIT 3 SPLIT F INP ENT F INP ENT To op...

Page 77: ...say up X kHz for their receive frequency OPERATION 1 q Push SPLIT for 1 sec to standby for split oper ation w If the DX station s operator says up 10 kHz Push 1 0 then SPLIT Or rotate the tuning dial OPERATION 2 If the DX station s operator says down 5 kHz be fore you enter standby for split operation Push F INP ENT 5 then SPLIT The split function is turned ON and 5 kHz down fre quency is entered ...

Page 78: ...dio will be over recorded with the last 5 sec so that the total of audio recorded is 15 sec only y Push EXIT SET twice to exit the voice memory screen Playing the recorded audio q Push EXIT SET several times to close a multi function screen if necessary w Push F 2 VOICE to call up the voice recorder screen If the transmit voice memory channel T1 T4 appears push F 5 T R to select receive voice memo...

Page 79: ...nnel R4 can be play back without selecting the voice memory screen q Push REC PLAY to playback PLAY appears Playback the recorded audio in the channel R4 w Push REC PLAY again to stop playback if de sired Playback is terminated automatically when all of the recorded contents in the channel R4 are played or after 15 sec BW BW 2 4k 2 4k SFT SFT 0 FIL2 FIL2 USB USB R E C R E C TX TX VFO VFO USB USB U...

Page 80: ...d blinks r Push F 5 T1 T4 several times to select the de sired voice memory t Input the desired character by rotating the tuning dial or by pushing the band key for number input Push ABC or abc to toggle capital and small letters Push 123 or etc to toggle numerals and symbols Push F 1 Ω Ω or F 2 for cursor movement Push F 3 DEL to delete the selected character Push F 4 SPACE to input a space Pushi...

Page 81: ... Push EXIT SET to return to the voice recorder screen Transmit level setting q Call up the voice recorder screen as described at left w Push F 3 TX LEV to select the voice memory transmit level set mode screen e Push the desired memory channel switch F 1 T1 F 4 T4 momentarily to transmit the contents r Rotate the tuning dial to adjust the transmit voice level Push F 5 DEF to select the default con...

Page 82: ...F 1 VFO VFO BW BW 500 500 SFT SFT 0 FIL2 FIL2 USB USB TX TX CW CW qr qpp pp 14 195 00 14 195 00 VFO VFO 1 BW BW 2 4k 2 4k SFT SFT 0 FIL2 FIL2 USB USB TX TX wr oyp pp 12 12 BW BW 2 4k 2 4k CW CW 14 195 00 14 195 00 VFO VFO ANT ANT 1 METER METER Po Po ANT ANT 1 METER METER Po Po ANT ANT 1 METER METER Po Po qw pp 12 00 qw pp 12 00 qw pp 12 00 VFO MEMO or F INP ENT SFT SFT 0 FIL2 FIL2 USB USB TX TX CW...

Page 83: ...EXIT SET to exit the memory channel screen Setting select memory channels is also possible in the scan screen ROLL ROLL SET SET SELECT SELECT NAME NAME WIDE WIDE SFT SFT 0 FIL2 FIL2 USB USB TX TX VFO VFO USB USB USB USB USB USB FIL2 FIL2 qr qot pp qr wpt pp 14 100 00 14 100 00 14 100 00 14 100 00 1 1ß ß VFO VFO BW BW 2 4k 2 4k 9 9 9 9 P 1 P 1 0 5 0 0 0 0 0 5 0 0 0 0 L S B L S B F L 2 F L 2 S C A N...

Page 84: ...NT ANT 1 METER METER Po ANT ANT 1 METER METER Po ANT ANT 1 METER METER Po ANT ANT 1 METER METER Po qw pp 12 00 qw pp 12 00 qw pp 12 00 Programming in memory mode q Select the desired memory channel with Y Y Z Z in memory mode Memory channel contents appear in the memory chan nel readout below the frequency readout appears if the selected memory channel is a blank channel and does not have contents...

Page 85: ...0 500 BPF BPF ANT 1 METER METER Po Po ANT ANT 1 METER METER Po ANT ANT 1 METER METER Po qw pp 12 00 qw pp 12 00 qw pp 12 00 VFO MEMO Transferring in memory mode This is useful for transferring frequency and operat ing mode while operating in memory mode When you have changed the frequency or operat ing mode in the selected memory channel Displayed frequency and mode are transferred Programmed freq...

Page 86: ...2 S C A N E D G E S C A N E D G E P 2 P 2 2 9 9 9 9 9 9 2 9 9 9 9 9 9 U S B U S B F L 2 F L 2 S C A N E D G E S C A N E D G E 1 1 4 1 0 0 0 0 1 4 1 0 0 0 0 U S B U S B F L 2 F L 2 _ 2 3 4 M E M O R Y M E M O R Y ç å DEL DEL SPACE SPACE WIDE WIDE ABC ABC qw pp 12 00 Character group keys Selected character ROLL ROLL SET SET SELECT SELECT NAME NAME WIDE WIDE SFT SFT 0 FIL2 FIL2 USB USB TX TX VFO VFO ...

Page 87: ...west The oldest written frequency and mode are erased Oldest MP W wq wii ww USB wq wuy pp USB wq pwr tw USB wq pqi py USB qr qiw rp USB qr qot pp USB MEMO PADS Calling up a frequency from a memo pad You can simply call up the desired frequency and op erating mode of a memo pad by pushing MP R sev eral times Both VFO and memory modes can be used The frequency and operating mode are called up starti...

Page 88: ...etails PROGRAMMED SCAN Repeatedly scans between two scan edge frequencies scan edge memory channels P1 and P2 This scan operates in VFO mode SELECT MEMORY SCAN Repeatedly scans all select memory channels F SCAN Repeatedly scans within F span area This scan operates in memory mode This scan operates in memory mode This scan operates in both VFO and memory modes Scan Scan edge P1 or P2 Scan edge P2 ...

Page 89: ...c a n e d g e s e d g e s P 2 P 2 2 9 9 9 9 9 9 M H z 2 9 9 9 9 9 9 M H z F scan operation q Push EXIT SET several times to close a multi function screen if necessary w Select VFO mode or a memory channel e Select the desired operating mode The operating mode can also be changed while scan ning r Push F 5 SCAN to select the scan screen t Set RF SQL open or closed See previous page for scan conditi...

Page 90: ...g r a m m e d P r o g r a m m e d P 1 P 1 0 5 0 0 0 0 M H z 0 5 0 0 0 0 M H z s c a n s c a n e d g e s e d g e s P 2 P 2 2 9 9 9 9 9 9 M H z 2 9 9 9 9 9 9 M H z Memory scan operation q Push EXIT SET several times to close a multi function screen if necessary w Select memory mode e Push F 5 SCAN to select the scan screen r Set RF SQL open or closed See p 83 for scan condition If the RF SQL control...

Page 91: ...MEMO F SELECT SELECT F SPAN F SPAN SET SET qw pp 12 00 F S p a n S p a n 1 0 k H z 1 0 k H z P r o g r a m m e d P r o g r a m m e d P 1 P 1 0 5 0 0 0 0 M H z 0 5 0 0 0 0 M H z s c a n s c a n e d g e s e d g e s P 2 P 2 2 9 9 9 9 9 9 M H z 2 9 9 9 9 9 9 M H z Setting select memory channels q Push EXIT SET several times to close a multi function screen if necessary w Select memory mode e Push F 5 ...

Page 92: ...SET SET SCAN SCAN COMP COMP OFF OFF WIDE WIDE AGC AGC MID MID VOX VOX OFF OFF F S p a n S p a n 1 0 k H z 1 0 k H z P r o g r a m m e d P r o g r a m m e d P 1 P 1 0 5 0 0 0 0 M H z 0 5 0 0 0 0 M H z s c a n s c a n e d g e s e d g e s P 2 P 2 2 9 9 9 9 9 9 M H z 2 9 9 9 9 9 9 M H z Tone scan The transceiver can detect the subaudible tone fre quency in a received signal By monitoring a signal that...

Page 93: ...ntenna 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 se lected as the ANT switch set mode ite...

Page 94: ...1 This function is turned ON in set mode p 101 PTT TUNER START The tuner is always tuned when the PTT is pushed after the frequency is changed more than 1 from last tuned frequency This function removes the push and hold TUNER operation and activates for the first transmission on a new frequency This function is turned ON in set mode p 101 NOTES If the tuner cannot tune the antenna Check the follo...

Page 95: ...d and selected The AH 3 can be used for HF bands only It can not be used for the 50 MHz band AH 4 AH 3 operation Tuning is required for each frequency Be sure to re tune the antenna before transmitting when you change the frequency even slightly q Set the desired frequency in an HF or 50 MHz band for use with the AH 4 Set the desired fre quency in an HF band for use with the AH 3 The AH 4 AH 3 wil...

Page 96: ... item sets the current time for the built in 24 hour clock 1 15 5 0 00 0 Push F 4 SET to enter the time T Ti im me er r F Fu un nc ct ti io on n This item sets the timer functions ON and OFF When the power ON timer or the power OFF timer is used ON must be selected in this item Push F 3 DEF for 1 sec to set the default value O ON N The timer functions can be operated default O OF FF F The timer fu...

Page 97: ...e Time Now Now 15 24 15 24 CLOCK2 CLOCK2 Function Function ON ON CLOCK2 CLOCK2 Offset Offset 0 00 0 00 Timer Timer Function Function ON ON Power ON Power ON Timer Timer Set Set 0 00 0 00 Power OFF Power OFF Period Period 60min 60min COMP COMP OFF WIDE WIDE AGC AGC MID MID VOX VOX OFF OFF DEF q Entering time set mode push F 1 Y Y or F 2 Z Z to select the CLOCK2 Offset item w Rotate the tuning dial ...

Page 98: ... for 1 sec to turn the power OFF The POWER light lights continuously r When the set time arrives the power is automati cally turned ON t The transceiver emits 10 beeps and turns OFF after the power off period elapses The POWER light blinks while beeping Push POWER momentarily to cancel the power off timer if desired The timer function in time set mode must be turned ON to enable the timer operatio...

Page 99: ...DSP DSP TIME TIME OTHERS OTHERS é è DEF DEF é è DEF DEF WIDE WIDE é è DEF DEF WIDE WIDE SSB FIL SSB FIL CW FIL CW FIL é è DSP FILTER SET DSP FILTER SET SHARP SHARP SSB SSB SHARP CW METER METER Po Po P AMP P AMP 1 ATT ATT 0FF 0FF BK IN BK IN OFF OFF 1 4 1 4 OFF OFF AGC AGC MID MID ANT ANT 1 EXIT SET Push for 1 sec SFT SFT 0 FIL2 FIL2 CW CW TX TX VFO VFO USB USB USB USB FIL2 FIL2 qr qot pp qr wpt pp...

Page 100: ...E E H H These items set the transmission passband width for wide setting by selecting the lower and higher fre quencies Higher freq 2500 2700 and 2900 Hz default 2900 2900 Hz default S SS SB B T TB BW W M MI ID D L L These items set the transmission passband width for middle setting by selecting the lower and higher fre quencies Lower freq 100 300 default and 500 Hz 300 300 Hz default S SS SB B T ...

Page 101: ...steps When beep tones are turned OFF this setting has no effect 50 50 default B Be ee ep p L Le ev ve el l L Li im mi it t This item allows you to set a maximum volume level for confirmation beep tones Confirmation beep tones are linked to the AF control until a specified volume level is reached further rotation of the AF control will not increase the volume of the beep tones O ON N Beep level is ...

Page 102: ...D from 1 to 8 4 Horizontal position is 4 default B Ba ac ck kl li ig gh ht t S Sw wi it tc ch he es s This item adjusts the brightness of the switches from 1 to 8 8 Backlight level is 8 Maximum default D Di is sp pl la ay y T Ty yp pe e This item sets the LCD screen type There are 8 se lectable types A B C D E F G and H A A A type LCD screen default D Di is sp pl la ay y F Fo on nt t This item set...

Page 103: ... to select the My Call item r Push F 4 EDIT to edit A cursor appears and blinks t Input the desired character by rotating the tuning dial or by pushing the band key for number input Push ABC to select capital letters Push 123 or etc to toggle numerals and symbols Push F 1 Ω Ω or F 2 for cursor movement Push F 3 DEL to delete the selected character Push F 4 SPACE to input a space y Push EXIT SET to...

Page 104: ...RF F S SQ QL L C Co on nt tr ro ol l The RF SQL control can be set as the RF squelch control default the squelch control only RF gain is fixed at maximum or Auto RF gain control in SSB CW and RTTY squelch control in AM and FM See pgs 2 30 for details R RF F S SQ QL L RF SQL control as RF squelch control default S SQ QL L RF SQL control as squelch control A AU UT TO O RF SQL control as RF gain cont...

Page 105: ... for 50 MHz band FM mode only and is used to input the repeater offset for the 50 MHz band The offset frequency can be set from 4 MHz to 4 MHz in 1 kHz steps 0 0 5 50 00 0M MH Hz z Minus 0 5 MHz offset default 4 4 0 00 00 0M MH Hz z Plus 4 0 MHz offset S SP PL LI IT T L LO OC CK K When this item is ON the tuning dial can be used to adjust the transmit frequency while pushing XFC even while the loc...

Page 106: ...o is selected the antenna switch is acti vated and the band memory memorizes the selected antenna See p 88 for details When Manual is selected the antenna switch is ac tivated and selects an antenna manually When OFF is selected the antenna switch is not ac tivated and does not function The ANT1 connector is always selected in this case A Au ut to o Antenna switch is activated and the selection is...

Page 107: ...ower synthesizer output See p 105 for unit installation H HI IG GH H Faster announcement default L LO OW W Slower announcement S SP PE EE EC CH H S S L Le ev ve el l When the optional UT 102 VOICE SYNTHESIZER UNIT is installed you can have frequency mode and signal level announcement Signal level announcement can be deactivated if desired When OFF is selected the signal level is not an nounced See...

Page 108: ...between SSB and CW The frequency shifting value may differ according to the CW pitch setting O ON N The displayed frequency shifts when the operating mode is changed between SSB and CW O OF FF F The displayed frequency does not shift default C CW W N No or rm ma al l S Si id de e Selects the carrier point of CW mode from LSB and USB L LS SB B The carrier point is set to LSB side default U US SB B ...

Page 109: ... Auto is selected the baud rate is automati cally set according to the connected controller or re mote controller A Au ut to o Auto baud rate default 1 19 92 20 00 0 19200 bps C CI I V V A Ad dd dr re es ss s To distinguish equipment each CI V transceiver has its own Icom standard address in hexadecimal code The IC 756PROIII s address is 6Eh When 2 or more IC 756PROIII s are connected to an option...

Page 110: ... frequency etc q Remove the top and bottom covers as shown above w Remove the protective paper attached to the bot tom of the UT 102 to expose the adhesive strip e Plug UT 102 into J3502 on the MAIN unit as shown in the diagram at right r Adjust the trimmer SPCH to set the speech level if desired Refer to inside views on p 106 t Return the top and bottom covers to their original positions U T 1 0 ...

Page 111: ... A PA unit FILTER unit Internal antenna tuner Top view BPF unit PRE AMP unit RF unit PLL unit Space for optional voice synthesizer UT 102 MAIN unit Clock backup battery DSP unit SPCH Optional voice synthesizer level adj Bottom view 13 14 ...

Page 112: ...vated Programmed subaudible tone frequency is set at wrong frequency Squelch is open RF SQL is assigned to RF gain control and squelch is open The same frequencies have been programmed in scan edge memory channels P1 and P2 2 or more memory channels have not been programmed 2 or more memory channels have not been designated as select channels Re connect the DC power cable correctly Check for the c...

Page 113: ...ceives normally but cannot re tain the current time See p 106 for battery location CIRCUITRY FUSE REPLACEMENT The 13 8 V DC from the DC power cable is conver ted to 5 V or 8 V and applied to all units in the IC 756PROIII except for the power amplifier through the circuitry fuse This fuse is installed in the PA unit q Remove the top cover as shown on p 105 w Remove 11 screws from the PA shielding p...

Page 114: ...9 00 MHz Other standard frequencies can also be used r Push EXIT SET several times to close a multi function screen if necessary t Push EXIT SET for 1 sec to select the set mode screen y Push F 5 OTHERS to enter miscellaneous oth ers set mode u Push F 1 Y Y several times to select the Calibra tion marker item i Rotate the tuning dial clockwise to turn the calibra tion marker ON Side tone may be he...

Page 115: ...com mand numbers A data area or sub command is added for some commands Controller to IC 756PROIII FE FE 6E E0 Cn Sc Data area FD Preamble code fixed Transceiver s default address Controller s default address Command number see the command table Sub command number see command table BCD code data for frequency or memory number entry End of message code fixed OK message to controller FE FE E0 6E FB F...

Page 116: ... antenna selection 01 00 ANT1 01 ANT2 Add 0 or 1 to turn RX ANT OFF or ON re spectively 13 00 Announce with voice synthesizer 01 00 all data 01 frequency and 02 S meter level 02 receive mode 14 01 Level data AF level setting 0 max CCW to 255 max CW 02 Level data RF level setting 0 max CCW to 255 11 o clock 03 Level data SQL level setting 0 11 o clock to 255 max CW 06 Level data NR level setting 0 ...

Page 117: ... 0 OFF 1 ON 16 22 Noise blanker 0 OFF 1 ON 40 Noise reduction 0 OFF 1 ON 41 Auto notch 0 OFF 1 ON 42 Repeater tone 0 OFF 1 ON 43 Tone squelch 0 OFF 1 ON 44 Speech compressor 0 OFF 1 ON 45 Monitor 0 OFF 1 ON 46 VOX function 0 OFF 1 ON 47 Break in 0 OFF 1 semi break in 2 full break in 48 Manual notch 0 OFF 1 ON 49 RTTY filter 0 OFF 1 ON 4F Twin peak filter 0 OFF 1 ON 50 Dial lock 0 OFF 1 ON 19 00 Re...

Page 118: ...0 NT 0548 Send read count up trigger chan nel 1 M1 2 M2 3 M3 4 M4 0549 Send read present number 1 9999 0550 Send read CW keyer repeat time 1 1 sec to 60 60 sec 0551 Send read CW keyer dot dash ratio 28 1 1 2 8 to 45 1 1 4 5 0552 Send read rise time 0 2 msec 1 4 msec 2 6 msec 3 8 msec 0553 Send read paddle polarity 0 Normal 1 Reverse 0554 Send read keyer type 0 Straight 1 Bug key 2 ELEC Key 0555 Se...

Page 119: ...z digit 0 fixed 100 kHz digit 0 9 10 kHz digit 0 9 10 MHz digit 0 fixed 1 MHz digit 0 4 Direction 00 direction 01 direction q 0 X X X X XX w e 0 r Code Frequency band Frequency range unit MHz 01 1 8 1 800000 1 999999 02 3 5 3 400000 4 099999 03 7 6 900000 7 499999 04 10 9 900000 10 499999 05 14 13 900000 14 499999 06 18 17 900000 18 499999 07 21 20 900000 21 499999 08 24 24 400000 25 099999 09 28 ...

Page 120: ...ble range 9 999 kHz Microphone connector 8 pin connector 600 Ω ELEC KEY connector 3 conductor 6 35 d mm 1 4 KEY connector 3 conductor 6 35 d mm 1 4 SEND connector Phono jack RCA ALC connector Phono jack RCA Receiver Receive system Triple conversion superheterodyne system Intermediate frequencies 1st 64 455 MHz 2nd 455 kHz 3rd 36 kHz Sensitivity typical SSB CW RTTY 0 16 µV 1 80 29 99 MHz 1 10 dB S ...

Page 121: ...tation operation Includes UP DOWN switches and a low cut function SP 23 EXTERNAL SPEAKER 4 audio filters headphone jack can connect to 2 transceivers Input impedance 8 Ω Max input power 4 W CT 17 CI V LEVEL CONVERTER For remote transceiver control using a personal computer You can change frequencies operating mode memory channels etc HM 36 HAND MICROPHONE Hand microphone equipped with UP DN switch...

Page 122: ...that radiation vertically downwards is at unity gain sidelobe suppression is equal to main lobe gain This is true of almost every gain antenna today Exposed persons are assumed to be beneath the antenna array and have a typical height to 1 8 m The figures assume the worst case emission of con stant carrier For the bands 10 MHz and higher the following power density limits have been recommended 10 ...

Page 123: ...1b EN 301489 1 and EN 301489 15 iii Article 3 2 EN 301 783 2 Type designation Declare on our sole responsibility that this equipment complies with the essential requirements of the Radio and Telecommunications Terminal Equipment Directive 1999 5 EC and that any applicable Essential Test Suite measurements have been performed Version where applicable Signature H Ikegami General Manager Authorized r...

Page 124: ...FRA ESP SWE AUT NED POR DEN GBR BEL ITA FIN IRL LUX GRE SUI NOR Intended Country of Use GER FRA ESP SWE AUT NED POR DEN GBR BEL ITA FIN IRL LUX GRE SUI NOR Intended Country of Use GER FRA ESP SWE AUT NED POR DEN GBR BEL ITA FIN IRL LUX GRE SUI NOR Intended Country of Use GER FRA ESP SWE AUT NED POR DEN GBR BEL ITA FIN IRL LUX GRE SUI NOR Intended Country of Use GER FRA ESP SWE AUT NED POR DEN GBR ...

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