INSTRUCTION MANUAL HF ALL BAND TRANSCEIVER i718
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-718. EXPLICIT DEFINITIONS WORD DEFINITION R WARNING Personal injury, fire hazard or electric shock may occur. CAUTION Equipment damage may occur. NOTE Inconvenience only. No risk of personal injury, fire or electric shock. PRECAUTIONS R WARNING HIGH VOLTAGE! NEVER R NEVER apply AC to the [DC13.
TABLE OF CONTENTS 1 1 TABLE OF CONTENTS ....................................... 1 SUPPLIED ACCESSORIES . ................................... 1 6 MEMORY OPERATION ............................... 35–38 n Memory channels . .......................................... 35 n Memory channel selection .............................. 35 n Memory channel programming ....................... 36 n Frequency transferring .................................... 37 n Memory clearing . ........................................
2 PANEL DESCRIPTION n Front panel Speaker Function Display @1 @0 !9 MODE FIL TS !8 !7 IC-718 V/M 1 A=B 2 A/B 3 MW 4 M-CL 5 MV 6 7 SCN 8 VOX 9 . ANF 0 F-INP ENT SPL NR q MIC PWR AF RF/SQL RIT SHIFT PHONES NB COMP SET P.AMP ATT TUNER LOCK w CH e r t y u q POWER SWITCH [PWR] Push momentarily to turn power ON. i o Z DN UP Y !6 !5 !4 !3 !2 !0 !1 or rotate the control counterclockwise to decrease the frequency. “ RIT ” appears on the display.
PANEL DESCRIPTION • Push several times (or push and hold) [√ DN]/[UP ∫] until desired memory channel appears. • A fter pushing [F-INP/ENT], push desired memory channel number from the keypad, then push [FINP/ ENT] again to select the memory channel directory. • Push [CH] to exit the memory channel select function. !2 MEMORY CHANNEL (BAND) UP/DOWN SWITCHES [√ DN]/[UP ∫] (p. 35) Push one or more times to select the memory channel, while [MEMO] indicator is blinking. Push to select a band.
2 PANEL DESCRIPTION n Front panel (continued) MODE FILTER V/M 1 A=B 2 A/B 3 MW 4 M=CL 5 MV 6 TS 7 SCN 8 VOX . ANF 0 F-INP ENT SPL NR 9 #3 @2 V/M 1 A=B 2 A/B 3 @3 MW 4 M=CL 5 MV 6 @4 SPL 7 SCN 8 VOX 9 ANF 0 F-INP ENT @5 AF SQL RIT SHIFT NB COMP SET P.AMP ATT TUNER #2 NR . #1 #0 @9 @8 @7 @6 LOCK CH Z DN UP Y @2 VFO/MEMORY SWITCH/1 [V/M•1] (pgs. 16, 35) T oggles the operating mode between VFO mode or memory mode when pushed.
PANEL DESCRIPTION 2 n Function display !9 !8 !7 !6 q w e r t y u i !5 !4 !3 !2 o q LOCK INDICATOR (p. 19) Appears when the dial lock function is in use. w RECEIVE INDICATOR Appears while receiving a signal or when the squelch is open. e TUNE INDICATOR Appears while the automatic tuning function is activated. o SIGNAL/SQL/RF-GAIN METER Functions as an S-meter while receiving. Functions as a Power, ALC or SWR meter while transmitting. (p. 26) !0 VFO/MEMORY INDICATOR (p.
2 PANEL DESCRIPTION n Rear panel q !0 w o i q ANTENNA TERMINAL [ANT] (p. 10) Connects a 50 Ω antenna with a PL-259 connector and a 50 Ω coaxial cable. w DC POWER SOCKET [DC 13.8V] (p. 12) Accepts 13.8V DC through the supplied DC power cable. Rear panel view e TUNER CONTROL SOCKET [TUNER] (p. 14) Accepts the control cable from an optional AH-4 AUTOMATIC ANTENNA TUNER. r CI-V REMOTE CONTROL JACK [REMOTE] (p.
PANEL DESCRIPTION 2 D ACC SOCKET INFORMATION • ACC socket ACC 13 9 10 11 12 5 6 7 8 1 2 3 4 Rear panel view PIN # NAME DESCRIPTION 1 8V Regulated 8 V output. 2 GND Connects to ground. SPECIFICATIONS Output voltage Output current : 8 V ±0.3 V : Less than 10 mA COLOR brown red Input/output pin. Goes to ground when transmitting. When grounded, transmits. Ground level Input current : –0.5 V to 0.8 V : Less than 20 mA 3 SEND orange 4 BDT Data line for the optional AT-180.
2 PANEL DESCRIPTION n 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. • T he [UP]/[DN] switch can simulate a key paddle. Preset in the CW PADDL in initial set mode. (p. 31) • MICROPHONE CONNECTOR [MIC] PIN NO.
INSTALLATION AND CONNECTIONS 3 n Unpacking n 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.
3 INSTALLATION AND CONNECTIONS n Required connections • Front panel i718 MODE FIL V/M 1 A=B 2 A/B 3 MW 4 M-CL 5 MV 6 7 SCN 8 VOX 9 . ANF 0 F-INP ENT TS MICROPHONES (p. 55) SPL NR MIC PWR AF RF/SQL RIT SHIFT PHONES NB COMP SET P.AMP ATT TUNER LOCK HM-36 CH SM-20 • Rear panel ANTENNA (p. 56) [Example]: 1.8–30 MHz bands DC POWER SUPPLY PS-85 AH-710 ft 0.3 m; 8 24.5 rox. app GROUND (p.
INSTALLATION AND CONNECTIONS 3 n Advanced connections • Front panel IC-718 MODE FIL V/M 1 A=B 2 A/B 3 MW 4 M-CL 5 MV 6 7 SCN 8 VOX 9 . ANF 0 F-INP ENT TS SPL NR MIC The AFSK modulation signal can be input from [MIC]. (p. 33) MIC PWR AF RF/SQL RIT SHIFT PHONES NB COMP SET P.AMP ATT TUNER LOCK CH Z DN UP Y HEADPHONES • Rear panel [REMOTE] (p. 57) Used for computer control and transceive operation. AH-4 (p. 55) with AH-2b or long wire ANTENNA (p.
3 INSTALLATION AND CONNECTIONS n Power supply connections CAUTION: Before connecting the DC power cable, check the following important items. Make sure: • The [POWER] switch is OFF. • O utput 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 PS-85 DC POWER SUPPLY w hen operating the IC-718 with AC power. Refer to the diagrams below.
INSTALLATION AND CONNECTIONS 3 n Linear amplifier connections CONNECTING THE IC-PW1 Remote control cable (supplied with the IC-PW1) To an antenna ACC cable (supplied with the IC-PW1) ACC-1 OPC-599 conversion cable (option) REMOTE ANT INPUT1 Coaxial cable (supplied with the IC-PW1) REMOTE ACC EXCITER 1 1&2 GND 13 9 10 11 12 5 6 7 8 1 2 3 4 GND IC-PW1 AC outlet IC-718 Ground (Non-European versions : 100–120/220–240 V European version : 230 V) CONNECTING THE IC-4KL Coaxial cable (supplied wit
3 INSTALLATION AND CONNECTIONS CONNECTING A NON-ICOM LINER AMPLIFIER R WARNING: S et the transceiver output To an antenna power and linear amplifier ALC output level referring to the linear amplifier instruction manual. 50 Ω coaxial cable ANT RF OUTPUT IC-718 RF INPUT SEND ALC he ALC input level must T be in the range 0 V to –4 V, and the transceiver does not accept positive voltage. Nonmatched ALC and RF power settings could cause a fire or ruin the linear amplifier.
FREQUENCY SETTING 4 n 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. esetting CLEARS all programmed contents in R memory channels and returns programmed values in quick/initial set mode to default values. q Make sure the transceiver power is OFF. w W hile pushing and holding [∫ UP] and [√ DN], push [PWR] for 1 sec.
4 FREQUENCY SETTING n VFO description VFO is an abbreviation of Variable Frequency Oscillator, and traditionally refers to an oscillator. The IC-718 VFO can store a frequency and an operating mode. You can call up a desired frequency to the VFO with the keypad or the memory transfer function (see p. 37). You can also change the frequency with the tuning dial and select the operating mode with the [MODE] switch or call up previously accessed frequency and modes with the band stacking register (p. 18).
FREQUENCY SETTING 4 n Frequency setting D Using the tuning dial • For general coverage receiver use The IC-718 has a general coverage receiver band. q P ush [∫ UP] or [√ DN] one or more times to select the general coverage receiver band. q Push [∫ UP] or [√ DN] one or more times to select the desired ham band. w Select the desired operating mode with the mode switch. (p. 20). Note: Even if you select the ham band, you can set the transceiver to the general coverage frequency.
4 FREQUENCY SETTING D Band stacking resister The band stacking register automatically stores the last frequency and mode used for each band. This is convenient for contest operation, etc. The tables below shows the band stacking register default settings for each band. BAND BAND BAND BAND BAND BAND 1.9 MHz 1.91000 MHz CW 18 MHz 18.10000 MHz USB 3.5 MHz 3.55000 MHz LSB 21 MHz 21.20000 MHz USB 7 MHz 7.05000 MHz LSB 24 MHz 24.95000 MHz USB 10 MHz 10.12000 MHz CW 28 MHz 28.
FREQUENCY SETTING 4 D 1 Hz and 10 Hz tuning steps When the programmable tuning step, “,” disappear, rotating the tuning dial changes the frequency in increments of 1 or 10 Hz. q Push [TS] one or more times until the programmable tuning step indicator “” disappears. w Push [TS] for 1 sec. to toggle between the 1 and 10 Hz step settings. Rotating the tuning dial changes the frequency in 10 Hz steps. TS Push for 1 sec.
5 RECEIVE AND TRANSMIT n Mode selection The following modes are available in the IC-718: SSB (LSB/USB), CW, CW REV (CW reverse), RTTY, RTTY REV (RTTY reverse) and AM. Push [MODE] one or more times to select desired operation mode. Push [MODE] for 1 sec. to toggle between USB and LSB. (SSB mode only) Push [MODE] for 1 sec. to toggle between CW and CW reverse or RTTY and RTTY reverse. (CW and RTTY mode only) • The selected mode is indicated in the function display.
RECEIVE AND TRANSMIT 5 n Function for receive ï IF shift function The IF shift function electronically narrows the passband frequency of the IF (intermediate frequency) and cuts out higher or lower frequency components of the IF to reject interference. The function shifts the IF frequency up to ±1.2 KHz in SSB/CW/RTTY modes and up ±250 Hz in CW-narrow/RTTY narrow modes. The IF shift is not available in AM mode.
5 RECEIVE AND TRANSMIT ï Attenuator The attenuator prevents desired signals from distorting when very strong signals are near the desired frequency or when very strong electric fields, such as from broadcasting stations, are near your location. Push [ATT] to toggle the 20 dB attenuator function ON and OFF. • “ATT” appears when the attenuator is turned ON. Appears when the attenuator ON.
RECEIVE AND TRANSMIT 5 n DSP function (Requires an optional UT-106 DSP UNIT) ï NR (Noise reduction) function When an optional UT-106 is installed (DSP appears in the function display), noise reduction function can be used. • Noise reduction example The noise reduction function reduces noise components and picks out desired signals which are buried in noise. The received AF signals are converted to digital signals and then the desired signals are separated from the noise.
5 RECEIVE AND TRANSMIT n Filter selection • Optional filter variations The filter selection switches the IF passband width as shown in the table at right. Name FL-52A FL-53A FL-96 FL-222 FL-257 The filter selection is automatically memorized in each mode. q Select the desired mode with the mode switches. w Push [FIL] one or more times to select the desired filter combination. • ã or ç does not appear while in normal IF filter mode. • ç appears when the wide IF filter is selected.
RECEIVE AND TRANSMIT 5 n Filter setting When an optional filter is installed, set the optional filters in initial set mode. Optional filters are not selected by default. (p. 47) • Optional filter selection D Optional filter setting q While pushing and holding [SET], push [POWER] to enter initial set mode. w Push [UP Y] or [Z DN] one or more times until “FIL” appears on the display. e Rotate the tuning dial to select the installed filter.
5 RECEIVE AND TRANSMIT n Function for transmit ï Output power and microphone gain • Setting output power q Push [SET] for 1 sec. to select quick set mode. w Push [∫ UP]/[√ DN] one or more times to select “RF Power”. e Rotate the main dial to select the desired output. Maximum output power is selected. • Output power is displayed in 101 steps (L, 1–99 and H) but is continuously selectable.
RECEIVE AND TRANSMIT 5 ï Microphone compressor IC-718 has a built-in, low distortion Mic compressor circuit. This circuit increases your average talk power in SSB mode and is especially useful for DX’ing when the receiving station is having difficulty copying your signal. q Selecting USB or LSB mode. w Select the mic gain display in quick set mode. Y • Push [SET] for 1 sec. to select quick set mode. • Push [∫ UP]/[√ DN] one or more times to select “MIC GAIN”.
5 RECEIVE AND TRANSMIT ï Optional AT-180 AUTOMATIC ANTENNA TUNER operation The AT-180 automatic antenna tuner matches the IC-718 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.
RECEIVE AND TRANSMIT 5 ï Optional AH-4 AUTOMATIC ANTENNA TUNER operation The AH-4 matches the IC-718 to a long wire antenna more than 7 m/23 ft long (3.5 MHz and above). • See p. 14 for connection. • S e e t h e A H - 4 i n s t r u c t i o n m a nu a l fo r A H - 4 installation and antenna connection details. TUNER OPERATION AH-4 setting example: • Tuner type setting (p.46) q Push [PWR] for 1 sec. to turn power OFF. w While pushing and holding [SET], push [PWR] to turn power ON.
5 RECEIVE AND TRANSMIT n Split frequency operation Split frequency operation allows you to transmit and receive on two different frequencies. Split frequency operation uses two frequencies, one in VFO A and the other in VFO B. push [A/B]. Following is an example of setting 7.057 MHz, CW mode in VFO A (for receive) and 7.025 MHz, CW mode in VFO B (for transmit). q S elect VFO B and set the frequency to 7.025 MHz/ CW. w Push [A/B] to select VFO A and set the frequency to 7.057 MHz/CW.
RECEIVE AND TRANSMIT 5 n Function for CW ï Connection for CW Initial set mode setting (p. 45) 13 9 10 11 12 5 6 7 8 1 2 3 4 : normal [ACC] [ELEC KEY] For no break-in operation: Connect an external switch such as a foot switch; or use the RTTY SEND terminal for all bands. 12 (See p. 33) Paddle : reverse 13 9 10 11 5 6 7 8 1 2 3 4 : off Straight key See p. 32 for connection details: Paddle operation from front panel MIC connector.
5 RECEIVE AND TRANSMIT ï CW pitch control The received CW audio pitch and monitored CW audio pitch can be adjusted to suit your preferences (300 to 900 Hz) with out changing the operating frequency. This shows the default setting for the CW pitch control (600 Hz). q Push [SET] for 1 sec. to enter quick set mode. w Push [∫ UP]/[√ DN] one or more times until “CW PITCH” appears, then rotate the main dial to set the desired pitch.
RECEIVE AND TRANSMIT 5 n Function for RTTY ï Connection for RTTY(FSK) Rear panel TU or TNC [EXT SP] [ACC] Personal computer 2-conductor 1/8˝ plug AF GND Use either the ACC or one of the two 1/8˝ plugs. Rear panel view SQL*1 AF out SEND GND FSKK 13 9 10 11 12 5 6 7 8 1 2 3 4 *1Connect SQL line when required. ï Connection for AFSK [MIC] connector (Front panel view) q Mic input 1 7 8 2 3 4 6 5 Use either the ACC or microphone connector.
5 RECEIVE AND TRANSMIT ï RTTY (FSK) operation q Connect a terminal unit as at p. 34. w Select RTTY (or RTTY-R) mode with [MODE]. e Select the desired FSK tone and shift frequencies as below. r Set the desired frequency with the main dial. t Operate the connected PC or TNC (TU). RTTY mode is selected. PRESETTING FOR RTTY • Tone frequency q Push [SET] for 1 sec. to enter quick set mode.
6 MEMORY OPERATION n Memory channels The transceiver has 101 memory channels. The memory mode is very useful for quickly changing to often-used 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.
6 MEMORY OPERATION n Memory channel programming Memory channel programming can be performed either in VFO mode or in memory mode. D Programming in VFO mode [EXAMPLE]: Programming 7.086 MHz/LSB into memory channel 10. q Set the desired frequency and operating mode in VFO mode. w Push [CH], then push [UP Y] or [Z DN] several times to select the desired memory channel. • “MEMO” blinks. • “BLANK” appears if the selected memory channel is a blank channel. e Push [MW] for 1 sec.
MEMORY OPERATION 6 n Frequency transferring The frequency and operating mode in a memory channel can be transferred to the VFO. D Transferring in VFO mode This is useful for transferring programmed contents to VFO. Frequency transferring can be performed in either VFO mode or memory mode. TRANSFERRING EXAMPLE IN VFO MODE Operating frequency : 21.320 MHz/USB (VFO) Contents of M-ch 12 : 14.180 MHz/CW q Select VFO mode with [V/M].
MEMORY OPERATION D Transferring in memory mode This is useful for transferring frequency and operating mode while operating in memory mode. hen you have changed the frequency or W operating mode in the selected memory channel: •D isplayed frequency and mode are transferred. • P rogrammed frequency and mode in the memory channel are not transferred, and they remain in the memory channel. q P ush [CH], then select the memory channel to be transferred with [UP Y] or [Z DN] in memory mode.
7 SCANS n Scan types PROGRAMMED SCAN MEMORY SCAN Repeatedly scans between two scan edge frequencies (scan edge memory channels P1 and P2). Repeatedly scans all programmed memory channels. Scan edge P1 or P2 BLANK Scan edge P2 or P1 Scan Mch 2 Mch 3 Mch 4 Mch 1 Mch 5 BLANK Jump Mch 99 Mch 7 Mch 6 This scan operates in VFO mode. This scan operates in memory mode. n Preparation Scan squelch condition.1.
7 SCANS n Programmed scan operation q Select VFO mode with [V/M]. w Select the desired operating mode. • T he operating mode can also be changed while scanning. e Set [RF/SQL] open or closed. • See previous page for scan condition. • If the [RF/SQL] control function is set as RF control, the squelch always opens. See pgs. 15, 20 for details. r Push [SCAN] to start the programmed scan. • “SCAN” appears while scanning.
SET MODE n General 8 [DIAL] Set mode is used for programming infrequently changed values or conditions of functions. The IC-718 has 2 separate set modes: quick set mode and initial set mode. [SET] D Quick set mode operation [Z] [Y] q While power is ON, push [SET] for 1 sec. • Quick set mode is selected and one of its items appears. w Push [UP Y] or [Z DN] to select the desired item. e Rotate the main dial to set the values or conditions for the selected item. r Repeat w and e to set other items.
8 SET MODE n Quick set mode items • RF power This item adjusts the RF output power. The RF output power can be adjusted from L, 1 to 99 and H for indication, however, it can be adjusted continuously. •The default is H (maximum power). Note that while adjusting the output power, the power meter is displayed automatically. • Mic gain This item adjusts microphone gain from 0 to 99 and H for indication, however, it can be adjusted continuously. The default is 50.
SET MODE 8 • BK-IN delay This item adjusts break-in delay time for CW semi break-in operation. The delay time is selectable from 2.0 to 13 (dots). The default is 7. • Key speed This item adjusts the CW key speed. The key speed can be selected from 6 to 60* wpm. The default is 20 wpm. * 40, 44, 47, 50, 52, 54, 56, 57, 59 can not be selected. • Key ratio This item sets the CW key ratio (or weight). The ratio can be selected from 2.8 to 4.5. The default is 30 (3.0).
8 SET MODE n Initial set mode items • Mode select This item is available in all modes, and allows you to simplify operation by inhibiting the selection of unneeded operating modes during normal operation. For example if you are operating mobile and only plan on using LSB and USB modes, use “MODE SELECTION” to inhibit access to all other modes (CW, RTTY and AM), thereby making selection of LSB and USB quick and easy. The default is on for all operating modes.
SET MODE 8 • Meter peak hold This item selects meter peak hold function on or off. The default is on. • Scan speed This item sets the rate at which channels or frequencies are scanned during scan operations. High or Low can be selected. The default is HI (High). • Scan resume This item sets the scan resume function ON or OFF. ON: scan resumes 10 sec. after stopping on a signal (or 2 sec. after a signal disappears); OFF: scan soes not resume after stopping on a signal.
8 SET MODE • Tuner type This item selects optional antenna tuner type.Three selections are available. • no : No optional tuner connected. • 4 : The optional AH-4 antenna tuner is connected. • 18 : The optional AT-180 antenna tuner is connected The default is no. • Auto tune The optional AT-180 ANTENNA TUNER has an automatic start capability which starts tuning if the SWR is higher than 1.5—3. When “off” is selected, the tuner remains OFF even when the SWR is poor (1.5—3).
SET MODE 8 • CI-V address To distinguish equipment, each CI-V transceiver has its own Icom standard address in hexadecimal code. The IC-718’s address is 5E. When 2 or more IC-718s are connected to an optional CT-17 CI-V LEVEL CONVERTER, rotate the main dial to select a different address for each IC-718 in the range 01H to 7FH. The default is 5E. • CI-V Transceive Transceive operation is possible with the IC-718 connected to other Icom HF transceivers or receivers.
9 INSTALLATION AND CONNECTIONS n Opening the transceiver’s case Follow the case and cover opening procedures shown here when you want to install an optional unit or adjust an internal unit, etc. AUTION: DISCONNECT the DC power cable C from the IC-718 before performing any work on the transceiver. Otherwise, there is danger of electric shock and/or equipment damage. q R e m o v e t h e 5 s c r e w s f r o m t h e t o p o f t h e transceiver and 4 screws from the sides, then lift up the top cover.
INSTALLATION AND CONNECTIONS 9 n CR-338 h igh stability crystal unit By installing the CR-338, the total frequency stability of the receiver will be improved. q R emove the bottom cover as shown in the diagram before. w Disconnect W2 from J4401 (MAIN unit) and W3 from J4201 (MAIN unit). e Remove 9 screws from the PLL unit, disconnect P4 from J201 (MAIN unit) and P2 from J401 (MAIN unit), then remove the PLL unit. r Remove the supplied internal crystal and replace with the CR-338.
9 INSTALLATION AND CONNECTIONS Turn the flat cable n UT-106 D SP RECEIVE UNIT P 2601 The UT-106 provides AF DSP functions such as noise reduction and auto notch. UT-106 Turn the unit over flat cable q Remove the bottom cover. w S lide the insulating case onto the UT-106 as shown right. (Fig. 1) e R emove the connection cable (P2601) from J2602 on the MAIN unit. Connect the cable into J1 on the UT-106. r Plug the connection cable (P1) from the UT-106 to J2602 on the MAIN unit.
OPTIONAL INSTALLATIONS/SETTINGS INSTALLATION AND CONNECTIONS 109 � AT-180 internal switch description The optional AT-180 has 3 operating conditions for HF band operation. Select a suitable condition according to your antenna system. qRemove the top cover of the AT-180. wSet the tuner switches to the desired positions according to the table below. SW Position Operation The tuner operating condition is set by S2 (default) described below.
10 MAINTENANCE n Troubleshooting The following chart is designed to help you correct problems which are equipment malfunctions. POWER PROBLEM If you are not able 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 Power does not come on • DC power cable is improperly connected. when the [POWER] switch • Fuse is blown. • Power supply not turned ON. is pused. SOLUTION REF.
MAINTENANCE n Fuse replacement 10 DC POWER CABLE FUSE REPLACEMENT If a fuse blows or the transceiver stops functioning, try to find the source of the problem, and replace the damaged fuse with a new, rated fuse. CAUTION:‑DISCONNECT the DC power cable 20 A fuse from the transceiver when changing a fuse. The IC-718 has 2 types of fuses installed for transceiver protection. • DC power cable fuses �������� FGB 20 A • Circuitry fuse ������������ FGB 4 A CIRCUITRY FUSE REPLACEMENT The 13.
11 SPECIFICATIONS D General • Frequency coverage : Receive 0.03–29.999999 MHz*1 Transmit 1.800– 1.999999 MHz*2 3.500– 3.999999 MHz*2 7.000– 7.300000 MHz 10.100–10.150000 MH 14.000–14.350000 MHz 18.068–18.168000 MHz 21.000–21.450000 MHz 24.890–24.990000 MHz 28.000–29.700000 MHz *1Guaranteed range: 0.5–29.
OPTIONS IC-PW1 HF + 50 MHz 1 KW LINER AMPLIFIER AT-180 HF + 50 MHz AUTOMATIC ANTENNA TUNER 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. AH-4 HF + 50 MHz AUTOMATIC ANTENNA TUNER Specially designed to tune a long wire antenna for portable or mobile HF operation.
12 OPTIONS SP-7 EXTERNAL SPEAKER Compact speaker for base station operation. Height can be adjusted for your convenience. UT-102 V OICE SYNTHESIZER FL-52A, FL-53A, FL-96, FL-222 and FL-257 455 KHz FILTERS • FL-52A: 500 Hz/–6dB (CW/RTTY narrow) • FL-53A: 250 Hz/–6dB (CW narrow) • FL-96: 2.8 KHz/–6dB (SSB wide) • FL-222: 1.8 KHz/–6dB (SSB narrow) • FL-257: 3.
CONTROL COMMAND 13 n 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-718 9–15 V DC Up to 4 Icom CI-V transceivers or receivers can be connected to a personal computer equipped with an RS-232C port. See p. 32 for setting the CI-V condition using set mode.
13 CONTROL COMMAND • Command table Command Sub command 00 — 01 — 02 — 03 — 04 — 05 — 06 — — 00 01 07 A0 B0 — 08 — 09 — 0A — 0B — 00 01 0E D0 D3 00 0F 01 10 — 11 — 01 02 03 14 06 09 0A 0B 0C 0F 01 15 02 16 19 58 02 22 40 41 44 46 47 00 Description Send frequency data Send mode data Read Upper/Lower frequencies Read frequencies Read operating mode Set operating frequency Set mode Set VFO Set VFO A Set VFO B VFO A=B VFO A � B Set Memory Set Memory CH Memory write Memory � VFO Memory clear Scan stop Prog
INTERNAL VIEW 14 n Top view Caution: Drive ID adj. (R 21) Final ID adj. (R 24) The transceiver has been thoroughly tested and adjusted at the factory before being shipped. The transceiver warranty does not cover any problems caused by unauthorized internal adjustment. Final amplifier (2SC2094x2) Fuse (FGB 4 A) PA unit R 25 FILTER unit n Bottom view Carrier suppression adj. (R 2303) MAIN unit IC APC adj. (R 1720) Tx power adj. (R 1707) AM Tx carrier adj. (R 1730) Reference freq. adj.
15 INSTALLATION NOTES For amateur base station installations, it is recommended that the forwards clearance in front of the antenna array is calculated relative to the EIRP (Effective Isotropic Radiated Power). The clearance height below the antenna array can be determined in most cases from the RF power at the antenna input terminals. In all cases any possible risk depends on the transmitter being activated for long periods.
INSTALLATION NOTES 15 DECLARATION OF CONFORMITY We Icom Inc. Japan 1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan 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.
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