Instruction Manual
Page 1
Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. INSTRUCTION MANUAL HF TRANSCEIVER i78 This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. INSTRUCTION MANUAL HF TRANSCEIVER i78 This device complies with Part 15 of the FCC rules.
Instruction Manual
Page 2
..., fire or electric shock. This will become exhausted. During maritime mobile operation, keep the transceiver and microphone as far away as a 24 V battery, to the IC-78 may damage the transceiver. If a linear amplifier is connected, set the transceiver's RF output power to operate the transceiver. Make sure the transceiver power is OFF, the vehicle's battery will avoid possible damage to the [DC13.8V] jack on the rear...
..., fire or electric shock. This will become exhausted. During maritime mobile operation, keep the transceiver and microphone as far away as a 24 V battery, to the IC-78 may damage the transceiver. If a linear amplifier is connected, set the transceiver's RF output power to operate the transceiver. Make sure the transceiver power is OFF, the vehicle's battery will avoid possible damage to the [DC13.8V] jack on the rear...
Instruction Manual
Page 3
...Function display 4 s Rear panel 5 s Microphone (HM-36 7 3 INSTALLATION AND CONNECTIONS ......... 8 - 12 s Unpacking 8 s Selecting a location 8 s Grounding 8 s Antenna connection 8 s Required connections 9 s Power supply connections 10 s Advanced connections 11 s External antenna tuners 12 4 OPERATION 13- 27 s Selecting a channel 13 s Frequency indication 14 s Lock function 14 s Scan function 14 s Basic voice receive and transmit 15 s Mode selection 15 s RF gain and Squelch 15 s Functions for transmit 16 s Functions for receive 19 s Filter selection 21 s Filter setting 22...
...Function display 4 s Rear panel 5 s Microphone (HM-36 7 3 INSTALLATION AND CONNECTIONS ......... 8 - 12 s Unpacking 8 s Selecting a location 8 s Grounding 8 s Antenna connection 8 s Required connections 9 s Power supply connections 10 s Advanced connections 11 s External antenna tuners 12 4 OPERATION 13- 27 s Selecting a channel 13 s Frequency indication 14 s Lock function 14 s Scan function 14 s Basic voice receive and transmit 15 s Mode selection 15 s RF gain and Squelch 15 s Functions for transmit 16 s Functions for receive 19 s Filter selection 21 s Filter setting 22...
Instruction Manual
Page 4
... of channel comment while editing. (p. 27) 2 to turn power OFF. ¯ While pushing and holding [SET], push [PWR] to enter the initial set mode. The squelch removes noise output from the speaker. !0 PREAMP SWITCH [P.AMP] (p. 19) Push to shift the center frequency lower. r AF CONTROL [AF] (inner control) Varies the audio output level from the speaker (closed condition) when no signal is received. • The squelch...
... of channel comment while editing. (p. 27) 2 to turn power OFF. ¯ While pushing and holding [SET], push [PWR] to enter the initial set mode. The squelch removes noise output from the speaker. !0 PREAMP SWITCH [P.AMP] (p. 19) Push to shift the center frequency lower. r AF CONTROL [AF] (inner control) Varies the audio output level from the speaker (closed condition) when no signal is received. • The squelch...
Instruction Manual
Page 5
to manually tune the tuner. • An optional antenna tuner must be used for several functions as that generated by automobile ignition systems. This function is assigned. 3 during channel comment programming. (p. 27) ¯ [ENT] - Direct channel number input. (p. 13) ¯ [TXF] - Transmit frequency indication. (p.14) - to enter the noise blanker level setting condition. !9 TONE SWITCH [TONE] This key action may differ according to version. ¯Selects...
to manually tune the tuner. • An optional antenna tuner must be used for several functions as that generated by automobile ignition systems. This function is assigned. 3 during channel comment programming. (p. 27) ¯ [ENT] - Direct channel number input. (p. 13) ¯ [TXF] - Transmit frequency indication. (p.14) - to enter the noise blanker level setting condition. !9 TONE SWITCH [TONE] This key action may differ according to version. ¯Selects...
Instruction Manual
Page 6
...; "VFO" appears during scanning. • Flashes when scan is paused. o CHANNEL NUMBER READOUT (p. 13) Shows the selected channel number. !0 BLANK INDICATOR Appears when no frequency programmed channel is selected. !1 SPLIT INDICATORS (p. 13) Appears when the duplex channel, in which different frequencies between transmit and receive are programmed, is selected. !2 RIT INDICATOR (p. 19) Appears when the RIT function is in use . 2 PANEL DESCRIPTION s Function display q w e r t y !6 !5 !4 !3 !2 !0 !1 u q LOCK INDICATOR (p. 14) Appears...
...; "VFO" appears during scanning. • Flashes when scan is paused. o CHANNEL NUMBER READOUT (p. 13) Shows the selected channel number. !0 BLANK INDICATOR Appears when no frequency programmed channel is selected. !1 SPLIT INDICATORS (p. 13) Appears when the duplex channel, in which different frequencies between transmit and receive are programmed, is selected. !2 RIT INDICATOR (p. 19) Appears when the RIT function is in use . 2 PANEL DESCRIPTION s Function display q w e r t y !6 !5 !4 !3 !2 !0 !1 u q LOCK INDICATOR (p. 14) Appears...
Instruction Manual
Page 9
... squelch switch [MIC] Pin No. release to transmit; 2 PANEL DESCRIPTION s Microphone (HM-36) • DESCRIPTION q w q UP/DOWN SWITCHES [UP]/[DN] Change the selected readout frequency or memory channel. •Continuous pushing changes the frequency or memory channel number continuously. • The [UP]/[DN] switch can damage the internal 8 V regulator. • HM-36 SCHEMATIC DIAGRAM MICROPHONE MICROPHONE CABLE MICROPHONE PLUG MIC ELEMENT + 10 µ 2 k 4700 p + 0.33 µ 4700 p DOWN UP qu wiy ert PTT RECEIVE...
... squelch switch [MIC] Pin No. release to transmit; 2 PANEL DESCRIPTION s Microphone (HM-36) • DESCRIPTION q w q UP/DOWN SWITCHES [UP]/[DN] Change the selected readout frequency or memory channel. •Continuous pushing changes the frequency or memory channel number continuously. • The [UP]/[DN] switch can damage the internal 8 V regulator. • HM-36 SCHEMATIC DIAGRAM MICROPHONE MICROPHONE CABLE MICROPHONE PLUG MIC ELEMENT + 10 µ 2 k 4700 p + 0.33 µ 4700 p DOWN UP qu wiy ert PTT RECEIVE...
Instruction Manual
Page 10
... transceiver's power drops to match the transceiver and antenna. Soft solder the center conductor. Slide the connector body on p. 1 of -range. Set the stand to one of critical importance, along with the IC-78, see 'Supplied accessories' on and solder it. CAUTION: Protect your transceiver from TV sets, TV antenna elements, radios and other problems, ground the transceiver through the GROUND terminal on your desired band...
... transceiver's power drops to match the transceiver and antenna. Soft solder the center conductor. Slide the connector body on p. 1 of -range. Set the stand to one of critical importance, along with the IC-78, see 'Supplied accessories' on and solder it. CAUTION: Protect your transceiver from TV sets, TV antenna elements, radios and other problems, ground the transceiver through the GROUND terminal on your desired band...
Instruction Manual
Page 15
... usage and stored channel number, or when changing large a number of channels. • When a duplex channel (different frequencies between transmit and receive) is selected, " " appears. D Using up/down switches Push [√ DN]/[UP ∫] on your operating style. A total of 3 ways of channels can be restricted in initial set mode (p. 32) depending on the front panel or the microphone to suit your needs. However, the number of channel selections are...
... usage and stored channel number, or when changing large a number of channels. • When a duplex channel (different frequencies between transmit and receive) is selected, " " appears. D Using up/down switches Push [√ DN]/[UP ∫] on your operating style. A total of 3 ways of channels can be restricted in initial set mode (p. 32) depending on the front panel or the microphone to suit your needs. However, the number of channel selections are...
Instruction Manual
Page 17
... RF power meter is selected. s Mode selection The following in advance: ¯ Microphone is connected. ¯ [AF] control is set to minimum position. ¯ [RF/SQL] is set to center position (squelch open . S-meter squelch threshold S-meter squelch Shallow Deep • When set as [SQL] control. The SQUELCH removes noise output from the Adjustable range speaker (closed condition) when no signal is received. u Push and hold [PTT] on a channel. to change...
... RF power meter is selected. s Mode selection The following in advance: ¯ Microphone is connected. ¯ [AF] control is set to minimum position. ¯ [RF/SQL] is set to center position (squelch open . S-meter squelch threshold S-meter squelch Shallow Deep • When set as [SQL] control. The SQUELCH removes noise output from the Adjustable range speaker (closed condition) when no signal is received. u Push and hold [PTT] on a channel. to change...
Instruction Manual
Page 19
...; VOX operation The VOX (Voice-operated Transmission) function switches between transmit and receive with the channel selector, until the trans- ALC zone Adjust [MIC GAIN] so that the ALC meter reads within the ALC zone. q Select USB or LSB mode. while operating. 4 OPERATION ï Microphone compressor IC-78 has a built-in the range of 20 to 50. This circuit increases your average talk power in quick set mode. 17 Rotate the channel...
...; VOX operation The VOX (Voice-operated Transmission) function switches between transmit and receive with the channel selector, until the trans- ALC zone Adjust [MIC GAIN] so that the ALC meter reads within the ALC zone. q Select USB or LSB mode. while operating. 4 OPERATION ï Microphone compressor IC-78 has a built-in the range of 20 to 50. This circuit increases your average talk power in quick set mode. 17 Rotate the channel...
Instruction Manual
Page 20
... sure to turn power ON again. • MANUAL TUNING q Set the desired channel. NEVER operate the AT-120, AT-130 or AH-4 when it is connected; TUNER OPERATION Tuning is bypassed and the an- y Push [PWR] for installation and antenna connection details. • Setting example: For mobile operation Optional AH-2b antenna element For outdoor operation Long wire AT-120 AT-130 AH-4 IC-718 MODE FILTER...
... sure to turn power ON again. • MANUAL TUNING q Set the desired channel. NEVER operate the AT-120, AT-130 or AH-4 when it is connected; TUNER OPERATION Tuning is bypassed and the an- y Push [PWR] for installation and antenna connection details. • Setting example: For mobile operation Optional AH-2b antenna element For outdoor operation Long wire AT-120 AT-130 AH-4 IC-718 MODE FILTER...
Instruction Manual
Page 28
... MARK and SPACE. PRESETTING FOR RTTY • Tone frequency q Push [SET] for 1 sec. w Select SSB (LSB) mode with the channel selec- RTTY mode is set mode. Normal space mark 170 2125 Hz Hz BFO displayed freq. ï RTTY (AFSK) operation q Connect a terminal unit as at p. 25. 4 OPERATION ï RTTY (FSK) operation q Connect a terminal unit as on the HF bands. t Operate the connected PC or TNC (TO). This reversal can be...
... MARK and SPACE. PRESETTING FOR RTTY • Tone frequency q Push [SET] for 1 sec. w Select SSB (LSB) mode with the channel selec- RTTY mode is set mode. Normal space mark 170 2125 Hz Hz BFO displayed freq. ï RTTY (AFSK) operation q Connect a terminal unit as at p. 25. 4 OPERATION ï RTTY (FSK) operation q Connect a terminal unit as on the HF bands. t Operate the connected PC or TNC (TO). This reversal can be...
Instruction Manual
Page 33
... default is Sq (squelch). • Beep A beep sounds each time a switch is on . This function can be used when listening to 99. The default is HI (High). • Scan resume Selects the scan resume function ON or OFF. after stopping on a signal. SET MODE 5 31 as it . This is useful when communicating in AM mode (the noise blanker function should not be turned OFF for silent operation. The default is...
... default is Sq (squelch). • Beep A beep sounds each time a switch is on . This function can be used when listening to 99. The default is HI (High). • Scan resume Selects the scan resume function ON or OFF. after stopping on a signal. SET MODE 5 31 as it . This is useful when communicating in AM mode (the noise blanker function should not be turned OFF for silent operation. The default is...
Instruction Manual
Page 34
... key use) • ud : For using the microphone's [UP]/[DN] keys instead of the paddle. The default is At (Auto). • CI-V address To distinguish equipment, each IC-78 in hexadecimal code. The default is 62. • CI-V Transceive Transceive operation is on " when operating the transceiver with the IC-78 connected to the IC-735 for each CI-V transceiver has its own Icom standard address in the range 01H...
... key use) • ud : For using the microphone's [UP]/[DN] keys instead of the paddle. The default is At (Auto). • CI-V address To distinguish equipment, each IC-78 in hexadecimal code. The default is 62. • CI-V Transceive Transceive operation is on " when operating the transceiver with the IC-78 connected to the IC-735 for each CI-V transceiver has its own Icom standard address in the range 01H...
Instruction Manual
Page 35
... expands filter and filter selection (W/N) key combination in operating mode independently. SET MODE 5 33 See p. 21 for usable filters for each mode and see p. 38 for filter installation. • Expand Filter When an optional IF filter is installed, this selection is turned ON. Selections available are FL-96, FL-222, FL-52A, FL53A...
... expands filter and filter selection (W/N) key combination in operating mode independently. SET MODE 5 33 See p. 21 for usable filters for each mode and see p. 38 for filter installation. • Expand Filter When an optional IF filter is installed, this selection is turned ON. Selections available are FL-96, FL-222, FL-52A, FL53A...
Instruction Manual
Page 37
... frequency into call channel) with keypad, select the channel before entering VFO mode. D Channel programming The programmed frequencies, both receive and transmit frequencies, operating mode and other settings, such as instructed above , then push [ENT] for 1 sec. w Push [TXF] to enter into the selected channel. • The " " indicator appears. 6 EXTRA FEATURES [ENT] [FC] [ENT] [TXF] D Call channel programming The programmed frequencies, both transmit and receive, in channel mode. ¯ Set receive or both transmit and receive, in the VFO mode...
... frequency into call channel) with keypad, select the channel before entering VFO mode. D Channel programming The programmed frequencies, both receive and transmit frequencies, operating mode and other settings, such as instructed above , then push [ENT] for 1 sec. w Push [TXF] to enter into the selected channel. • The " " indicator appears. 6 EXTRA FEATURES [ENT] [FC] [ENT] [TXF] D Call channel programming The programmed frequencies, both transmit and receive, in channel mode. ¯ Set receive or both transmit and receive, in the VFO mode...
Instruction Manual
Page 41
... are installed in the DC power cable and the internal PA unit.) No sounds comes out • Volume level is activated. p. 9 and only strong signals • Antenna is improperly connected. POWER RECEIVE PROBLEM POSSIBLE CAUSE Power does not come • Power cable is not properly matched to the • Push [TUNE] to tune the connected an- operating frequency. mode. lected. The displayed channel • The dial lock function is too low. •...
... are installed in the DC power cable and the internal PA unit.) No sounds comes out • Volume level is activated. p. 9 and only strong signals • Antenna is improperly connected. POWER RECEIVE PROBLEM POSSIBLE CAUSE Power does not come • Power cable is not properly matched to the • Push [TUNE] to tune the connected an- operating frequency. mode. lected. The displayed channel • The dial lock function is too low. •...
Instruction Manual
Page 42
... the problem, and replace the damaged fuse with a new, rated fuse. PA unit FGB 4 A s Resetting the CPU [PWR] [√] [∫] Returns programmed values in both quick and initial set mode to all units in the IC-78 through the circuitry fuse. 8 MAINTENANCE s Fuse replacement If a fuse blows or the transceiver stops functioning, try to find the source of fuses installed for transceiver protection. • DC power cable...
... the problem, and replace the damaged fuse with a new, rated fuse. PA unit FGB 4 A s Resetting the CPU [PWR] [√] [∫] Returns programmed values in both quick and initial set mode to all units in the IC-78 through the circuitry fuse. 8 MAINTENANCE s Fuse replacement If a fuse blows or the transceiver stops functioning, try to find the source of fuses installed for transceiver protection. • DC power cable...
Instruction Manual
Page 44
... frequencies Read frequencies Read operating mode Set operating frequency Set mode Set memory Set memory channel Scan stop Memory scan start cloning. t Push [TONE] of the IC-78s is required. • Cloning operation q Turn power OFF. Master transceiver indicates "M". Master transceiver indication [REMOTE] jack to [REMOTE] Mini-plug cable to the other IC-78's [REMOTE] e While pushing [TXF] and [FC], turn the sub IC-78 power ON. r While pushing [SET] and [FC], turn the master IC78 power ON. Daughter transceiver indication • After cloning complete; This function is useful...
... frequencies Read frequencies Read operating mode Set operating frequency Set mode Set memory Set memory channel Scan stop Memory scan start cloning. t Push [TONE] of the IC-78s is required. • Cloning operation q Turn power OFF. Master transceiver indicates "M". Master transceiver indication [REMOTE] jack to [REMOTE] Mini-plug cable to the other IC-78's [REMOTE] e While pushing [TXF] and [FC], turn the sub IC-78 power ON. r While pushing [SET] and [FC], turn the master IC78 power ON. Daughter transceiver indication • After cloning complete; This function is useful...