INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i756PRO
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-756PRO. EXPLICIT DEFINITIONS WORD DEFINITION R WARNING Personal injury, fire hazard or electric shock may occur. CAUTION NOTE Equipment damage may occur. If disregarded, inconvenience only. No risk of personal injury, fire or electric shock.
1 TABLE OF CONTENTS IMPORTANT ........................................ i EXPLICIT DEFINITIONS ..................... i PRECAUTIONS ................................... i 1 TABLE OF CONTENTS ................ 1 2 PANEL DESCRIPTION ........... 2 – 13 ■ Front panel ..................................... 2 ■ Microphone (HM-36) ...................... 9 ■ LCD display .................................. 10 ■ Screen menu arrangement ........... 11 ■ Rear panel ....................................
2 PANEL DESCRIPTION ■ Front panel !6 !5 !2 HF/50MHz TRANSCEIVER TIMER q !4 !3 POWER TRANSMIT w i756PRO PHONES TUNER MONITOR NB NR e ELEC-KEY AF RF/SQL BAL NR r MIC t MIC GAIN RF POWER COMP y u i o !0 F-1 F-2 F-3 F-4 F-5 SSB CW/RTTY AM/FM FILTER EXIT KEY SPEED BK-IN DELAY !1 q POWER SWITCH [POWER/TIMER] ➥ Push momentarily to turn power ON. (dot) (com) (dash) • Turn the optional DC power supply ON in advance.
PANEL DESCRIPTION i RF GAIN CONTROL/SQUELCH CONTROL [RF/SQL] (outer control) Adjusts the RF gain and squelch threshold level. The squelch removes noise output from the speaker (closed condition) when no signal is received. • The squelch is particularly effective for FM. It is also available for other modes. • 12 to 1 o’clock position is recommended for any setting of the [RF/SQL] control.
2 PANEL DESCRIPTION ■ Front panel (continued) @9 @8 @7 @6 TWIN PBT EIVER SPLIT 1.8 1 3.
PANEL DESCRIPTION @8 MAIN/SUB CHANGE SWITCH [CHANGE] ➥ Toggles the frequency and selected memory channel between main and sub readouts when pushed. • Toggles between transmit frequency and receive frequency when the split frequency function is ON. (p. 32) ➥ Equalizes the sub readout frequency to the main readout frequency when pushed for 2 sec. @9 MULTI-FUNCTION SWITCHES Push to select the functions indicated in the LCD display to the right of these switches.
2 PANEL DESCRIPTION ■ Front panel (continued) $5 $4 $3 $2 $1 #8 #9 $0 #7 TWIN PBT CEIVER SPLIT 1.8 1 3.5 2 7 3 DUAL WATCH 10 4 14 5 18 6 Z 21 7 24 8 28 9 MW GENE • 50 0 F-INP ENT Y CHANGE PBT CLR VFO/ MEMO i756PRO NB MP-W MP-R NOTCH TS CW PITCH MAIN/ SUB NR TX NR LOCK RIT TX RIT/ F-1 F-2 F-3 F-4 F-5 SSB CW/RTTY AM/FM FILTER EXIT SPEECH COMP CLEAR TX #2 #1 #0 LOCK KEY SPEED BK-IN DELAY @8 @8 LOCK SWITCH [LOCK] (p.
PANEL DESCRIPTION #5 PBT CLEAR SWITCH [PBT CLR] (p. 26) Clears the PBT settings when pushed for 2 sec. • The [PBT CLR] indicator appears when PBT is in use. #6 NOTCH SWITCH [NOTCH] (p. 27) ➥ Toggles the notch function between auto, manual 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 when auto notch is in use. • “MN” appears when manual notch is in use.
2 PANEL DESCRIPTION ■ Front panel (continued) $7 $8 $9 %0 %1 $6 TWIN PBT EIVER SPLIT 1.8 1 3.5 2 7 3 DUAL WATCH 10 4 14 5 18 6 Z 21 7 24 8 28 9 MW GENE • 50 0 F-INP ENT Y CHANGE PBT CLR VFO/ MEMO i756PRO NB MP-W TS MP-R NOTCH CW PITCH MAIN/ SUB NR XFC RX BAL NOTCH M-CL TX NR LOCK RIT TX RIT/ F-1 F-2 F-3 F-4 F-5 SSB CW/RTTY AM/FM FILTER EXIT SPEECH COMP CLEAR TX LOCK KEY SPEED BK-IN DELAY $6 LCD FUNCTION DISPLAY (See p. 10 for details.
PANEL DESCRIPTION 2 ■ Microphone (HM-36) q w q UP/DOWN SWITCHES [UP]/[DN] Change the selected readout frequency or memory channel. w PTT SWITCH Push and hold to transmit; release to receive. • 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 keyer set mode. (p.
2 PANEL DESCRIPTION ■ LCD display !6 q w e w r ANT 1 METER Po !5 !4 !3 !2 !1 BW 2.4k SFT TX VFO o qw:pp 0 USB FIL2 qr≥qqy≥pp 1ß 21.085.00 P.AMP 1 56ß USB ATT OFF VFO AGC MID !0 CW FIL2 qr≥qpp≥pp 21.085.00 -12.5k i u CW SPECTRUM SCOPE +12.5k Grid 10k 10dB y VOX OFF COMP OFF WIDE SPAN i u SUB MARKER ATT MARKER HOLD SET t q TX INDICATOR Indicates the frequency readout for transmit. i FREQUENCY READOUTS (p. 24) Show the operating frequency.
PANEL DESCRIPTION 2 ■ Screen menu arrangement The following screens can be selected from the start up screen. Choose the desired screen using the following chart. •Start up screen ANT 1 •Spectrum scope screen (p. 44) BW 2.4k SFT TX Pushing [EXIT] one or more times returns to the start up screen. See p. 64 for set mode arrangement. VFO qw:pp 0 USB METER Po qr≥qpp≥pp P.AMP 1 VFO USB SPAN CW --. ---. -- 1 SCOPE +12. 5k HOLD SET COMP OFF WIDE FIL2 qr≥qpp≥pp ATT OFF SPECTRUM -12.
2 PANEL DESCRIPTION ■ Rear panel !4 !3 !2 qw !1 e q RECEIVE ANTENNA CONNECTOR [RX ANT] (p. 16) Connects a 50 Ω general coverage antenna with an RCA connector. w TRANSVERTER JACK [XVERT] (p. 19) External transverter input/output jack. Activated by voltage applied to [ACC(2)] pin 6. e TUNER CONTROL SOCKET [TUNER] (p. 16) Accepts the control cable from an optional AH-4 HF/50 MHz AUTOMATIC ANTENNA TUNER or AH-3 HF AUTOMATIC ANTENNA TUNER.
PANEL DESCRIPTION !2 ANTENNA CONNECTOR 1 [ANT1] !3 ANTENNA CONNECTOR 2 [ANT2] (pgs. 14, 15) Accept a 50 Ω antenna with a PL-259 connector. 2 !4 GROUND TERMINAL [GND] (pgs. 14, 15) Connect this terminal to a ground to prevent electrical shocks, TVI, BCI and other problems. When using an optional AH-4 HF/50 MHz AUTOMATIC ANTENNA TUNER or AH-3 HF AUTOMATIC ANTENNA TUNER, connect it to the [ANT1] connector.
3 INSTALLATION AND CONNECTIONS ■ Unpacking ■ Antenna connection After unpacking, immediately report any damage to the delivering carrier or dealer. Keep the shipping cartons. For radio communications, the antenna is of critical importance, along with output power and sensitivity. Select 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.
INSTALLATION AND CONNECTIONS 3 ■ Required connections • Front panel CW KEY TWIN PBT HF/50MHz TRANSCEIVER TIMER POWER TRANSMIT SPLIT 1.8 1 3.
3 INSTALLATION AND CONNECTIONS ■ Advanced connections • Front panel TWIN PBT HF/50MHz TRANSCEIVER TIMER HEADPHONES POWER TRANSMIT SPLIT 1.8 1 3.
INSTALLATION AND CONNECTIONS ■ Power supply connections 3 CAUTION: Before connecting the DC power cable, check the following important items. Make sure: • The [POWER] switch is OFF. • Output voltage of the power source is 12–15 V when you use a non-Icom power supply. • DC power cable polarity is correct. Use an optional DC power supply with a 25 A capacity and above when operating the transceiver with AC power. Refer to the diagrams below.
3 INSTALLATION AND CONNECTIONS ■ Linear amplifier connections Use the [ANT1] connector when connecting a linear amplifier. CONNECTING THE IC-PW1 To an antenna Remote control cable (supplied with the IC-PW1) ACC cable (supplied with the IC-PW1) ACC-1 Be sure to connect the cable to the 7-pin ACC(2) jack. Coaxial cable REMOTE ANT INPUT1 (supplied with the IC-PW1) INPUT2 Connect [INPUT2] if necessary.
INSTALLATION AND CONNECTIONS 3 CONNECTING THE IC-2KL ACC cable (supplied with the IC-2KL) To an antenna Coaxial cable (supplied with the IC-2KL) CAUTION: Set the transceiver output power for 80 W max. with the [RF POWER] control, otherwise, a protection circuit will activate.
3 INSTALLATION AND CONNECTIONS ■ External antenna selector or antenna tuner connections CONNECTING THE EX-627 Coaxial cable (supplied with the EX-627) ANT1 EX-627 ACC(2) ACC cable (supplied with the EX-627) Ground CONNECTING THE AH-4 or AH-3 • The AH-4 and AH-3 must be connected to [ANT1]. • The AH-3 can be used for the HF bands only, although the [ANT1] connector is used for both HF and 50 MHz operation. Use a coaxial antenna switch when you operate the 50 MHz band with the AH-3 connected.
INSTALLATION AND CONNECTIONS 3 ■ 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.
4 FREQUENCY SETTING ■ When first applying power (CPU resetting) Before first applying power, make sure all connections required for your system are complete by referring to Chapter 3. Then, reset the transceiver using the following procedure. [F-INP] [M-CL] [POWER] Resetting CLEARS all programmed contents in memory channels and returns programmed values in set mode to default values. q Make sure the transceiver power is OFF. w While pushing [M-CL] and [F-INP], push [POWER] for 2 sec. to turn power ON.
FREQUENCY SETTING 4 ■ VFO description VFO is an abbreviation of Variable Frequency Oscillator, and traditionally refers to an oscillator. The transceiver’s VFO is somewhat different. The VFO of the IC-756PRO acts like a computer’s window and can show one frequency and one operating mode. ANT 1 BW 2.4k SFT T X VFO You can call up a desired frequency to the VFO with the keypad, memo pad-read switch (see p. 55) or the memory transfer function (see p. 53).
4 FREQUENCY SETTING ■ Frequency setting with the tuning dial • For ham band use • For general coverage receiver use q Push the desired band key on the keypad 1–3 times. q Push [GENE] on the keypad 1–3 times. • 3 different frequencies can be selected on each band with the band key. (See “Triple band stacking register” below.) • The [GENE] key calls up a frequency for general coverage receiver use. ANT 1 BW 2.4k SFT T X VFO ANT 1 BW 2.4k SFT T X VFO METER Po qw:pp 0 USB CW 21.076.
FREQUENCY SETTING 4 ■ Advanced tuning functions QUICK TUNING STEP The operating frequency can be changed in kHz steps (0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz selectable) for quick tuning. q Push [TS] momentarily to display the quick tuning indicator. Quick tuning indicator ANT 1 BW 2.4k SFT TX METER Po VFO qw:pp 0 USB FIL2 qr≥qpp≥pp 1 21.076.50 SELECTING THE kHz STEP q Push [TS] momentarily to turn the quick tuning step ON. w Push [TS] for 2 sec. to enter the quick tuning step setting display.
5 RECEIVE AND TRANSMIT ■ Mode selection The following modes are available in the IC-756PRO: See the diagram below for the order of selection. SSB (LSB/USB), CW, CW-R (CW reverse), RTTY, RTTY-R (RTTY reverse), AM and FM. Data modes of SSB, AM and FM are also available. SSB CW CW-R AM AM-D LSB LSB-D RTTY RTTY-R FM FM-D AM/FM To select a mode of operation, push the desired mode switch momentarily.
RECEIVE AND TRANSMIT 5 ■ Notch function This transceiver has auto and manual notch functions. The auto notch function automatically attenuates more than 3 beat tones, tuning signals, etc., even if they are moving. The manual notch can be set to attenuate a frequency via the [NOTCH] control. ➥ Push [NOTCH] to toggle the notch function between auto, manual and OFF in SSB and AM modes. ➥ Push [NOTCH] to turn the manual notch function ON and OFF in CW mode.
5 RECEIVE AND TRANSMIT ■ RTTY filter/Twin peak filter The transceiver has 5 RTTY filters in addition to normal IF filters. The passband width can be selected from 1 kHz, 500 Hz, 350 Hz, 300 Hz and 250 Hz. When the RTTY filter is turned ON, the RTTY tuning meter can be used. (p. 41) Moreover, the twin peak filter changes the receive frequency response by boosting 2 particular frequencies (2125 and 2295 Hz) for better copying of desired RTTY signals. • Push [(F-3)DEF] for 2 sec. to select a default value.
RECEIVE AND TRANSMIT 5 ■ CW pitch control The received CW audio pitch and monitored CW audio can be adjusted to suit your preferences (300 to 900 Hz) without changing the operating frequency. The filter set mode screen graphically displays the CW pitch operations. (See below.) The received CW audio pitch can be adjusted in 25 Hz steps. ■ IF filter selection The transceiver has 3 passband width IF filters for each mode.
5 RECEIVE AND TRANSMIT ■ AGC function The AGC (auto gain control) controls receiver gain to produce a constant audio output level even when the received signal strength is varied by fading, etc. The transceiver has 3 AGC characteristics (time constant; fast, mid, slow) for non-FM mode. The FM mode AGC time constant is fixed as ‘FAST’ (0.1 sec.) and AGC time constant cannot be selected. • Setting the AGC time constant q Select the desired mode except FM mode. w Push [AGC] for 2 sec. to enter AGC set mode.
RECEIVE AND TRANSMIT 5 ■ Dualwatch operation Dualwatch monitors 2 frequencies with the same mode simultaneously. During dualwatch, both frequencies should be on the same band, because the bandpass filter in the RF circuit is selected for the main readout frequency. • Equalized receive frequency and “ DUAL-W ” appear in the LCD. This quick dualwatch function can be turned OFF in set mode. (p. 68) • Pushing [DUALWATCH] momentarily activates the dualwatch with the previously operated frequency. BW 2.
5 RECEIVE AND TRANSMIT ■ Split frequency operation Split frequency operation allows you to transmit and receive in the same mode on two different frequencies. The split frequency operation is basically performed using 2 frequencies on the main and sub readouts. Following is an example of setting 21.290 MHz for receiving and 21.310 MHz for transmitting. q Set 21.290 MHz (USB) in VFO mode. ANT 1 BW 2.4k SFT TX VFO qw:pp 0 USB FIL2 METER Po wq≥wop≥pp P.AMP 1 VFO 14.100.
RECEIVE AND TRANSMIT 5 ■ Quick split function When you find a DX station, an important consideration is how to set the split frequency. When you push the [SPLIT] switch for 2 sec., split frequency operation is turned ON, the sub readout is equalized to the main readout frequency and enters standby for transmit frequency input. w Push [SPLIT] for 2 sec. • Split frequency operation is turned ON. • The sub readout is equalized to the main readout frequency.
5 RECEIVE AND TRANSMIT ■ RIT and ∂TX • RIT function • ∂TX function The RIT function shifts the receive frequency up to ±9.999 kHz in 1 Hz steps (10 Hz steps when cancelling the 1 Hz step readout) without moving the transmit frequency. The ∂TX function shifts the transmit frequency up to ±9.999 kHz in 1 Hz steps (10 Hz steps when cancelling the 1 Hz step readout) without moving the receive frequency. • See #0 on p. 6 for function description. • See #1 on p. 6 for function description.
RECEIVE AND TRANSMIT 5 ■ Monitor function The monitor function allows you to monitor your transmit IF signals in any mode through the speaker. Use this to check voice characteristics while adjusting SSB transmit tones. (p. 65) The CW sidetone functions regardless of the [MONITOR] switch setting. [MONITOR] switch [PHONES] jack q Push [MONITOR]. • The indicator lights when the monitor function is ON. w Push [EXIT] one or more times to close a multifunction screen, if necessary.
5 RECEIVE AND TRANSMIT ■ Meter function The transceiver has 4 transmit meter functions for your convenience. Select the desired meter with the [METER] switch. In addition, the transceiver can display the multi-function digital meter in the LCD display, which displays all transmit meters simultaneously. • Analog transmit meter • Multi-function digital meter ➥ Push [METER] to select RF power (Po), SWR, ALC or compression level (COMP) for transmit metering. q Push [METER] for 2 sec.
RECEIVE AND TRANSMIT 5 ■ 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 • Speech compressor q Select USB or LSB mode. w Push [COMP] momentarily to turn the speech compressor ON and OFF. e Push [COMP] for 2 sec. to toggle between narrow, middle or wide transmit filter.
5 RECEIVE AND TRANSMIT ■ Digital voice recorder The transceiver has a total of 8 memory channels, 4 each for transmit and receive, of digital voice memories. A maximum message of 15 sec. can be recorded in each transmit and receive channels. Providing a transmission memory is very convenient for repeated CQ and number transmissions at contest times, as well as when making consecutive calls in DX’pedition. q Push [EXIT] one or more times to close a multifunction screen, if necessary.
RECEIVE AND TRANSMIT 5 ■ Digital voice recorder (continued) • Recording a message for transmit To transmit a message using a voice recorder, record the desired message in advance as described below. q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Select a phone mode by pushing [SSB] or [AM/FM]. e Push [(F-2)VOICE] to call up the voice recorder screen. AGC MID VOX OFF COMP OFF WIDE PLAY PLAY PLAY T X 15sec. TX 1 5 s e c .
5 RECEIVE AND TRANSMIT ■ Digital voice recorder (continued) • Sending a message for transmit • Transmit level setting q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Select a phone mode by pushing [SSB] or [AM/FM]. e Push [(F-2)VOICE] to call up the voice recorder screen. r Push [(F-1)PLAY] to select the voice memory screen. 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.
RECEIVE AND TRANSMIT 5 ■ RTTY decoder The transceiver has an RTTY decoder for Baudot (mark freq.: 2125 Hz, shift freq.: 170 Hz, 45 bps). An external terminal unit (TU) or terminal node controller (TNC) is not necessary for receiving a Baudot signal. q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [CW/RTTY] once or twice to select RTTY mode. e Push [(F-2)DECODE] to turn the RTTY decoder ON. • RTTY decoder screen appears.
5 RECEIVE AND TRANSMIT ■ Electronic CW keyer The transceiver has an electronic keyer. Keying speed can be adjusted with [KEY SPEED]. Keying weight, the ratio of dot : space : dash, can be set from 1 : 1 : 2.8 to 1 : 1 : 4.5 in keyer set mode. i Push [F-2] to select the “Rise Time” item. KEYER K E Y E R CW-KEY CW-KEY AGC MID BK-IN OFF 1/4 OFF • Setting the electronic keyer q Push [CW/RTTY] once or twice to select CW mode.
RECEIVE AND TRANSMIT 5 ■ Memory keyer The memory keyer memorizes and can re-transmit 4 CW key codes for often-used CW sentences, antenna types, etc. Total capacity of the memory keyer is 54 characters in each memory channel. • Programming the memory keyer q Push [CW/RTTY] to select CW mode. w Push [(F-2)KEYER] to select keyer set mode. e Push [(F-2)EDIT] to enter the memory keyer edit screen. BW 500 0 SFT VFO TX FIL2 qr≥qot≥pp USB 14.100.
5 RECEIVE AND TRANSMIT ■ Spectrum scope screen This function allows you to display the relative strengths of signals around the center frequency. The span can be set to ±12.5 kHz, ±25 kHz, ±50 kHz and ±100 kHz. Ideal for monitoring band conditions in an instant. q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [(F-1)SCOPE] to select the scope screen. ANT 1 BW 2.4k SFT VFO TX qw:pp 0 USB FIL2 METER Po qr≥qot≥pp P.AMP 1 VFO USB 14.100.
RECEIVE AND TRANSMIT 5 ■ Automatic antenna selection The transceiver covers 0.1–60 MHz over 10 bands. Each band key has a band memory which can memorize a selected antenna (ANT1, ANT2, ANT1/RX antenna 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.
5 RECEIVE AND TRANSMIT ■ Repeater operation A repeater amplifies received signals and retransmits them at a different frequency. When using a repeater, the transmit frequency is shifted from the receive frequency by an offset frequency. A repeater can be accessed using split frequency operation with the shift frequency set to the repeater’s offset frequency. For accessing a repeater which requires a repeater tone, set the repeater tone frequency in set mode as described below.
RECEIVE AND TRANSMIT 5 ■ Tone squelch operation The tone squelch opens only when receiving a signal containing a matching subaudible tone. You can silently wait for calls from group members using the same tone. q Push [VFO/MEMO] to select VFO mode. ANT 1 BW 2.4k SFT TX VFO qw:pp 0 USB FIL2 METER Po wq≥wop≥pp P.AMP 1 VFO 14.100.00 1 USB USB q Select FM mode. w Push [TONE] for 2 sec. to enter tone set mode. e Push [F-2] to select the tone squelch tone item.
5 RECEIVE AND TRANSMIT ■ Antenna tuner operation The internal automatic antenna tuner matches the transceiver to the connected antenna automatically. Once the tuner matches an antenna, the variable capacitor angles are memorized as a preset point for each frequency range (100 kHz steps). Therefore, when you change the frequency range, the variable capacitors are automatically preset to the memorized point. TUNER OPERATION ➥ Push the [TUNER] switch to turn the internal antenna tuner ON.
RECEIVE AND TRANSMIT 5 ■ Optional external tuner operation • AH-4/AH-3 HF AUTOMATIC ANTENNA TUNER The AH-4/AH-3 matches the IC-756PRO to a long wire antenna more than 3 m/10 ft long (3.5 MHz and above) or more than 12 m/40 ft long (1.8 MHz and above). • See p. 20 for the transceiver and AH-4/AH-3 connection. • See the AH-4/AH-3 instruction manual for AH-4/AH-3 installation and antenna connection details.
6 MEMORY OPERATION ■ Memory channels The transceiver has 101 memory channels. The memory mode is very useful for quickly changing to oftenused frequencies. All 101 memory channels are tuneable which means the programmed frequency can be tuned temporarily with the tuning dial, etc. in memory mode. MEMORY CHANNEL MEMORY CHANNEL NUMBER CAPABILITY TRANSFER TO VFO OVERWRITING CLEAR Regular memory channels 1–99 One frequency and one mode in each memory channel.
MEMORY OPERATION 6 ■ Memory channel screen The memory channel screen simultaneously shows 7 memory channels and their programmed contents. 13 memory channels can be displayed in the wide memory channel screen. You can select a desired memory channel from the memory channel screen. • Selecting a memory channel using the memory channel screen q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [(F-3)MEMORY] to select the memory channel screen.
6 MEMORY OPERATION ■ Memory channel programming Memory channel programming can be preformed either in VFO mode or in memory mode. • Programming in VFO mode q Set the desired frequency and operating mode in VFO mode. w Push [Y]/[Z] several times to select the desired memory channel. • Memory channel screen is convenient for selecting the desired channel. • Memory channel contents appear in the memory channel readout (below the frequency readout). • “--.---.
MEMORY OPERATION 6 ■ Frequency transferring The frequency and operating mode in a memory channel can be transferred to the VFO. • Transferring in VFO mode This is useful for transferring programmed contents to VFO. q Select VFO mode with [VFO/MEMO]. w Select the memory channel to be transferred with [Y]/[Z]. • Memory channel screen is convenient for selecting the desired channel. • Memory channel contents appear in the memory channel readout (below the frequency readout). • “--.---.
6 MEMORY OPERATION ■ Memory names All memory channels (including scan edges) can be tagged with alphanumeric names of up to 10 characters each. r Push [(F-4)NAME] to edit memory channel name. • A cursor appears and blinks. • Memory channel names of blank channels cannot be edited. Capital letters, small letters, numerals, some symbols _ (! # $ % & ¥ ? " ' ` ^ + – ✱ / . , : ; = < > ( ) [ ] { } | _ ) and spaces can be used. BW 2.4k SFT VFO TX 14.100.
MEMORY OPERATION 6 ■ Memo pads The transceiver has a memo pad function to store frequency and operating mode for easy write and recall. The memo pads are separate from memory channels. The default number of memo pads is 5, however, this can be increased to 10 in set mode if desired. (p.
7 SCANS ■ Scan types • The scan function can be used on the main readout only. • You can operate a scan while operating on a frequency using the dualwatch or split functions. See p. 31 for details. PROGRAMMED SCAN ∂F SCAN Repeatedly scans between two scan edge frequencies (scan edge memory channels P1 and P2). Repeatedly scans within ∂F span area. Scan edge P1 or P2 Scan edge P2 or P1 Start frequency –∂F frequency +∂F frequency Scan Scan Scan Jump Jump This scan operates in VFO mode.
SCANS 7 ■ Programmed scan operation q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Select VFO mode. e Select the desired operating mode. • The operating mode can also be changed while scanning. r Push [(F-4)SCAN] to select the scan screen. ANT 1 BW 2.4k SFT TX VFO qw:pp 0 USB FIL2 qr≥qot≥pp METER Po 14.100.00 1 P.AMP 1 VFO USB FIL2 BW 2.4k SFT TX VFO qw:pp 0 USB FIL2 METER Po qr≥qot≥pp P.AMP 1 VFO 14.100.
7 SCANS ■ Fine programmed scan/fine ∂F scan Fine scan functions as programmed or ∂F scan, but scan speed decreases when the squelch opens but does not stop. The scanning tuning step shifts from 50 Hz to 10 Hz while the squelch opens. q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [(F-4)SCAN] to select the scan screen. e Set for programmed scan or ∂F scan as described on previous page. r Push [(F-1)PROG] or [(F-2)∂F] to start a scan.
SCANS 7 ■ Select memory scan operation q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Select memory mode. e Select the desired operating mode. • The operating mode can also be changed while scanning. r Push [(F-4)SCAN] to select the scan screen. y Push [(F-1)MEMO] to start the memory scan. • Decimal points blink while scanning. u Push [(F-3)SELECT] to start select memory scan; push [(F-3)SELECT] again to return to memory scan, if desired. ANT 1 BW 2.
7 SCANS ■ Scan set mode Scan set mode is used for programming scanning speed and scan resume condition. • Scan speed The transceiver has 2 speeds for scanning, high and low. q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [(F-4)SCAN] to select the scan screen. ANT 1 BW 2.4k SFT TX VFO qw:pp 0 USB FIL2 METER Po qr≥qot≥pp P.AMP 1 VFO USB 1 q Push [EXIT] one or more times to close a multifunction screen, if necessary.
SCANS 7 ■ Tone scan The transceiver can detect the subaudible tone frequency in a received signal. By monitoring a signal that is being transmitted on a repeater input frequency, you can determine the tone frequency required to access the repeater. q Set the desired frequency or memory channel to be checked for a tone frequency. w Push [AM/FM] one or more times to select FM mode. e Push [(F-5)TONE] for 2 sec. to enter the tone frequency screen. TONE FREQUENCY AGC FAST VOX OFF REPEATER TONE 88.
8 CLOCK AND TIMERS ■ Setting the current time The transceiver has a built-in 24-hour clock with power-off and power-on timer functions. This is useful when logging QSO’s and so on. The clock indication is always displayed except after pushing [F-INP]. r Set the current time using the tuning dial. • “TIME–set push [SET]” blinks. ANT 1 BW 2.4k SFT TX q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [(F-5)SET] then [(F-3)TIME] to enter timer set mode.
CLOCK AND TIMERS 8 ■ Setting power-off period The transceiver can be set to turn OFF automatically after being activated via the power-on timer. The power-off period can be set to 5–120 min. in 5 min. steps. r Set the desired power-off time using the tuning dial. • “TIMER – set TIME SET AGC MID q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [(F-5)SET] then [(F-3)TIME] to enter timer set mode. e Push [(F-1)Y] or [(F-2)Z] to select the power-off time item.
9 SET MODE ■ Set mode description y Set the desired condition using the tuning dial. Set mode is used for programming infrequently changed values or conditions of functions. This transceiver has a level set mode, display set mode, timer set mode and miscellaneous (others) set mode. • Push [(F-3)DEF] to select a default condition or value. u For timer set mode, push [(F-4)SET] to enter the set time. i Push [EXIT] twice to exit the set mode.
SET MODE 9 ■ Level set mode SSB Tx Tone (Bass) This item adjusts the bass level of the transmit audio tone in SSB mode from –5 dB to +5 dB in 1 dB steps. 0dB 0 dB (default) SSB Tx Tone (Treble) This item adjusts the treble level of the transmit audio tone in SSB mode from –5 dB to +5 dB in 1 dB steps. 0dB 0 dB (default) Monitor Level This item adjusts the transmit IF signal monitor level from 0 % to 100 % in 1 % steps. 50% 50 % (default) See p. 35 for details.
9 SET MODE ■ Display set mode To adjust the LCD contrast or backlight, wait until the LCD becomes stable (10 min. or more after turning power ON). This is an inherent characteristic of LCDs and LCD backlights and does not indicate a transceiver malfunction. Contrast (LCD) This item adjusts the contrast of the LCD from 0 % to 100 % in 1 % steps. 60% 60 % (default) Backlight (LCD) This item adjusts the brightness of the LCD from 0 % to 100 % in 1 % steps.
SET MODE 9 ■ Display set mode (continued) My Call Your call sign, etc. can be displayed in the opening screen when turning power ON. Up to 10 characters can be programmed. Capital letters, numerals, some symbols (– / . ) and spaces can be used. q Push [EXIT] one or more times to close a multifunction screen, if necessary. w Push [(F-5)SET] then [(F-2)DISP] to select the display set mode screen. e Push [(F-2)Z] one or more times to select the ‘My Call’ item. • Push [ABC] to select capital letters.
9 SET MODE ■ Miscellaneous (others) set mode Calibration Marker This item is used for a simple frequency check of the transceiver. ON OFF Calibration marker ON Calibration marker OFF (default) ON OFF Confirmation beep ON (default) Confirmation beep OFF ON OFF Band edge beep ON (default) Band edge beep OFF See p. 76 for calibration procedure. Turn the calibration marker OFF after checking the frequency of the transceiver.
SET MODE 9 ■ Miscellaneous (others) set mode (continued) FM SPLIT Offset (HF) This item sets the offset (difference between transmit and receive frequencies) for the quick split function. However, this setting is used for HF bands in FM mode only and is used to input the repeater offset for an HF band. -0.100MHz -4.000MHz Minus 0.1 MHz offset (default) Minus 4.0 MHz offset -1.000MHz +4.000MHz Minus 1.0 MHz offset (default) Plus 4.
9 SET MODE ■ Miscellaneous (others) set mode (continued) [ANT] Switch You can set the antenna connector selection to automatic, manual or non-selection (when using 1 antenna only). Auto Antenna switch is activated and the selection is automatically memorized. (default) When “Auto” is selected, the antenna switch is activated and the band memory memorizes the selected antenna. See p. 45 for details. Manual Antenna switch is activated. OFF Antenna switch is deactivated and [ANT1] is always selected.
SET MODE 9 ■ Miscellaneous (others) set mode (continued) RTTY Decode New Line Code This item selects the new line code of the internal RTTY decoder. See p. 41 for details. CR,LF,CR+LF CR+LF CR, LF and CR+LF (default) CR+LF only CR : Carriage Return LF : Line Feed Speech Language When the optional UT-102 VOICE SYNTHESIZER UNIT is installed, you can select between English and Japanese as the language.
9 SET MODE ■ Miscellaneous (others) set mode (continued) Mic Up/Down Speed This item sets the rate at which frequencies are scanned when the microphone [UP]/[DN] switches are pushed and held. High or low can be selected. HIGH LOW High speed (default, 50 tuning steps/sec.) Low speed (25 tuning steps/sec.) AUTO 19200 Auto baud rate (default) 19200 bps 5Ch 7Fh Address of 5Ch (default) Address of 7Fh CI-V baud rate This item sets the data transfer rate.
OPTION INSTALLATION 10 ■ Opening the transceiver’s case Follow the case and cover opening procedures shown here when you want to install an optional unit or adjust the internal units, etc. CAUTION: DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver. Otherwise, there is danger of electric shock and/or equipment damage. q Remove 2 screws from the left side of the transceiver to remove the carrying handle as shown below.
11 MAINTENANCE ■ Troubleshooting The following chart is designed to help you correct problems which are not equipment malfunctions. POWER PROBLEM If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your nearest Icom Dealer or Service Center. POSSIBLE CAUSE • DC power cable is improperly connected. • Fuse is blown. • Reconnect the DC power cable correctly. • Check for the cause, then replace the fuse with a spare one.
MAINTENANCE DISPLAY PROBLEM The displayed frequency does not change properly. POSSIBLE CAUSE SOLUTION • The dial lock function is activated. • A set mode screen is selected. • Push [LOCK] to deactivate the function. • Push [EXIT] one or more times to exit the set mode screen. • Reset the CPU. • The internal CPU has malfunctioned. ■ Fuse replacement 11 REF. p. 6 pgs. 11, 64 p.
11 MAINTENANCE ■ Tuning dial brake adjustment The tension of the tuning dial may be adjusted to suit your preference. The brake adjustment screw is located on the right side of the tuning dial. See the figure at right. Turn the brake adjustment screw clockwise or counterclockwise to obtain a comfortable tension level while turning the dial continuously and evenly in one direction.
INTERNAL VIEWS 12 • Top view PA unit PA fuse (FGB 5 A) Internal antenna tuner FILTER unit • Bottom view RF unit Clock backup battery PLL unit Space for optional voice synthesizer (UT-102) MAIN unit 77
13 CONTROL COMMAND ■ Remote jack (CI-V) information • CI-V connection example The transceiver can be connected through an optional CT-17 CI-V LEVEL CONVERTER to a personal computer equipped with an RS-232C port. The Icom Communications Interface-V (CI-V) controls the following functions of the transceiver. IC-756PRO 9–15 V DC Up to 4 Icom CI-V transceivers or transceivers can be connected to a personal computer equipped with an RS-232C port. See p. 72 for setting the CI-V condition using set mode.
CONTROL COMMAND 13 • Command table Command Sub command 00 — Same as 01 command 06 02 03 04 05 06 07 08 09 0A 0B Description Send frequency data Send mode data — — — — 00 01 02 03 04 05 07 08 Read band edge frequencies Read operating frequency Read operating mode Set frequency data Set LSB Set USB Set AM Set CW Set RTTY Set FM Set CW-R Set RTTY-R — B0 B1 C0 C1 D0 D1 Select VFO mode Exchange main and sub readouts Equalize main and sub readouts Turn the dualwatch OFF Turn the dualwatch ON Select main
14 SPECIFICATIONS • General • Frequency coverage Receive Transmit : 00.030–60.000 MHz*1, *2 01.800–01.999*2 03.500–03.999*2 07.000–07.300*2 10.100–10.150*2 14.000–14.350*2 18.068–18.168*2 21.000–21.450*2 24.890–24.990*2 28.000–29.700*2 50.000–54.000*2 *1 Some frequency bands are not guaranteed.
OPTIONS 15 IC-PW1 HF/50 MHz ALL BAND 1 kW LINEAR AMPLIFIER SM-20 DESKTOP MICROPHONE Full-duty 1 kW linear amplifier including an automatic antenna tuner. Has automatic tuning and band selection capability. Full break-in (QSK) operation is possible. The amplifier/power supply unit and the remote control unit are separated. Unidirectional, electret microphone for base station operation. Includes [UP]/[DOWN] switches and a low cut function.
Count on us! A-5627H-1EX-w Printed in Japan © 1999 Icom Inc.
