IC-78_user.pdf

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1、INSTRUCTION MANUAL HF TRANSCEIVER i78 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 undes

2、ired operation. Downloaded by? Amateur Radio Directory? ? www.hamdirectory.info IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLYbefore attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL.This manual contains important safety and operating in- structions for the IC-78. EXPLICIT DEFINI

3、TIONS i PRECAUTIONS RWARNING HIGH VOLTAGE! NEVERat- tach an antenna or internal antenna connector during transmission. This may result in an electric shock or burn. RNEVERapply AC to the DC13.8V jack on the transceiver rear panel. This could cause a fi re or ruin the transceiver. RNEVERapply more th

4、an 16 V DC, such as a 24 V battery, to the DC13.8V jack on the transceiver rear panel. This could cause a fi re or ruin the transceiver. RNEVERlet metal, wire or other objects touch any internal part or connectors on the rear panel of the transceiver. This may result in an electric shock. NEVERexpos

5、e the transceiver to rain, snow or any liquids. AVOID using or placing the transceiver in areas with temperatures below 10C (+14F) or above +60C (+140F). Be aware that temperatures on a vehicles dashboard can exceed 80C (+176F), resulting in per- manent damage to the transceiver if left there for ex

6、- tended periods. AVOID placing the transceiver in excessively dusty en- vironments or in direct sunlight. AVOID placing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. During mobile operation, DO NOT operate the trans- ceiver without

7、 running the vehicles engine. When the transceiver power is ON and your vehicles engine is OFF, the vehicles battery will soon become ex- hausted. Make sure the transceiver power is OFF before start- ing the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes. Duri

8、ng maritime mobile operation, keep the transceiver and microphone as far away as possible from the mag- netic navigation compass to prevent erroneous indica- tions. BE CAREFUL! The heatsink will become hot when op- erating the transceiver continuously for long periods. BE CAREFUL! If a linear amplif

9、ier is connected, set the transceivers RF output power to less than the lin- ear amplifi ers maximum input level, otherwise, the lin- ear amplifi er will be damaged. Use Icom microphones only (supplied or optional). Other manufacturers microphones have different pin assignments, and connection to th

10、e IC-78 may dam- age the transceiver. WORDDEFINITION RWARNING Personal injury, fi re hazard or electric shock may occur. CAUTIONEquipment damage may occur. NOTE Inconvenience only. No risk of per of personal injury, fi re or electric shock. 1 1 TABLE OF CONTENTS q w er IMPORTANT . i EXPLICIT DEFINIT

11、IONS . i PRECAUTIONS . i 1 TABLE OF CONTENTS . 1 SUPPLIED ACCESSORIES . 1 2 PANEL DESCRIPTION . 27 I Front panel . 2 I Function display . 4 I Rear panel . 5 I Microphone (HM-36) . 7 3 INSTALLATION AND CONNECTIONS . 812 I Unpacking . 8 I Selecting a location . 8 I Grounding . 8 I Antenna connection .

12、 8 I Required connections . 9 I Power supply connections . 10 I Advanced connections . 11 I External antenna tuners . 12 4 OPERATION. 1327 I Selecting a channel. 13 I Frequency indication . 14 I Lock function . 14 I Scan function. 14 I Basic voice receive and transmit. 15 I Mode selection . 15 I RF

13、gain and Squelch. 15 I Functions for transmit. 16 I Functions for receive. 19 I Filter selection . 21 I Filter setting. 22 I Functions for CW. 23 I Functions for RTTY . 25 I Channel comment programming. 27 5 SET MODE . 2833 I General. 28 I Quick set mode items. 29 I Initial set mode items. 31 6 EXTR

14、A FEATURES. 3436 I Instruction. 34 I VFO operation. 34 I 2-Tone alarm operation . 36 7 INSTALLATION AND CONNECTIONS. 3738 I Opening the transceivers case . 37 I Optional bracket and carrying handle. 37 I CR-338 HIGH STABILITY CRYSTAL UNIT. 38 I Optional IF fi lters . 38 8 MAINTENANCE . 3940 I Troubl

15、eshooting . 39 I Fuse replacement . 40 I Resetting the CPU . 40 9 REMOTE JACK INFORMATION. 4142 I CI-V remote control . 41 I Data cloning between transceivers . 42 10 SPECIFICATIONS . 43 12 OPTIONS . 4445 SUPPLIED ACCESSORIES The transceiver comes with the following accessories. Qty. q DC power cabl

16、e. 1 w Hand microphone (HM-36) . 1 e Fuse (FGB 20 A; for DC cable) . 1 r Fuse (FGB 4 A; internal use) . 1 I Front panel q POWER SWITCH PWR Push momentarily to turn power ON. Turn the optional DC power supply ON in advance. Push for 1 sec. to turn power OFF. While pushing and holding SET, push PWR to

17、 enter the initial set mode. (p. 28) w MICROPHONE CONNECTOR MIC Accepts supplied or optional microphone. See p. 45 for appropriate microphones. See p. 7 for microphone connector information. e HEADPHONE JACK PHONES (p. 11) Accepts headphones. When headphones are connected, the internal speaker or co

18、nnected external speaker does not function. r AF CONTROL AF (inner control) Varies the audio output level from the speaker. t RF GAIN/SQUELCH CONTROL RF/SQL (outer control; pgs. 15, 31) Adjusts the squelch threshold level. The squelch re- moves noise output from the speaker (closed con- dition) when

19、 no signal is received. The squelch is available for all modes. The control can be set as the squelch plus RF gain controls or squelch control only (RF gain is fi xed at maximum) in initial set mode. y RIT CONTROL RIT (inner control; p. 19) Shifts the receive frequency 1.2 kHz for clear re- ception

20、of an off frequency signal. Rotate the control clockwise to increase the fre- quency, or rotate the control counterclockwise to decrease the frequency. “” appears on the display. u IF SHIFT CONTROLS SHIFT (outer control; p. 20) Shifts the center frequency of the receivers IF passband. Rotate the con

21、trol clockwise to shift the center fre- quency higher, or rotate the control counterclock- wise to shift the center frequency lower. i LOCK SWITCH LOCK (p. 14) Push momentarily to turn the dial lock function ON and OFF. The dial lock function electronically locks the chan- nel selector. o CHANNEL SE

22、LECTOR Selects an operating channel, sets conditions in the quick/initial set mode items, etc. !0 PREAMP SWITCH P.AMP (p. 19) Push to turn the preamp ON or OFF. !1 FC SWITCH CH Push to change the indication, channel comment or stored frequency. (p. 14) This key action only for some versions. Push fo

23、r 1 sec. to entering into VFO mode. (p. 35) !2 MEMORY CHANNEL UP/DOWN SWITCHES DN/UP Push to select the operating channel. (p. 13) Push for 1 sec. to start scanning. (p. 14) Push to select the quick/initial set modeitems while quick/initial set modeis selected. (p. 28) Push to select the digit of ch

24、annel comment while editing. (p. 27) 2 2 PANEL DESCRIPTION PWR SpeakerFunction Display 10!9!7 !5 !4 !6 !3 !2 !0 !8 !1oiuytre w q 3 2PANEL DESCRIPTION !3 ATTENUATOR SWITCH ATT (p. 19) Push to turn the 20 dB attenuator function ON and OFF. !4 TUNER SWITCH TUNER (p. 18) Push to turn the antenna tuner f

25、unction ON and OFF. Push for 1 sec. to manually tune the tuner. An optional antenna tuner must be connected. When the tuner cannot tune the antenna, the tun- ing circuit is bypassed automatically after 20 sec. !5 SET SWITCH SET Push for 1 sec. to enter the quick set mode. (p. 28) Push and hold SET,

26、then push PWR to enter the initial set mode. (p. 28) Push to change the meter function; (p. 16) PO: indicates the relative RF output power. ALC: Indicates ALC level. SWR: Indicates the SWR over the transmission line. !6 MIC COMPRESSOR SWITCH COMP (p. 17) Turn the Mic. compressor function ON and OFF.

27、 !7 KEYPAD The keypad can be used for several functions as described below: 0 to 9 For entering operating channel number. (p. 13) Selects a character during channel comment programming. (p. 27) ENT Direct channel number input. (p. 13) TXF Transmit frequency indication. (p.14) Selects a space and cha

28、nges the editing digit during channel comment programming. (p. 27) !8 NOISE BLANKER SWITCH NB (p. 19) Turns the noise blanker ON and OFF. The noise blanker reduces pulse-type noise such as that generated by automobile ignition systems. This function is not effective against non pulse-type noise. Pus

29、h NB for 1 sec. to enter the noise blanker level setting condition. !9 TONE SWITCH TONE This key action may differ according to version. Selects the call channel and emits a distress alarm tone from the speaker. (p. 36) Transmits a distress alarm or alarm testing signal when pushed for 1 sec. (p. 36

30、) Cancel the distress alarm tone emission, or dis- tress alarm transmission. Selects the tuning step item in the quick set mode directly. No function is assigned. 0 CALL SWITCH CALL Push to select call channel. Push again to return to previous condition. 1 MODE SWITCH MODE (p. 15) Push to change an

31、operating mode. Push MODE for 1 sec. during SSB mode to switch between LSB or USB. Push MODE for 1 sec. during CW or RTTY mode, to switch between CW and CW reverse or RTTY and RTTY reverse. “” appears on the display. 4 2PANEL DESCRIPTION I Function display q LOCK INDICATOR (p. 14) Appears when the d

32、ial lock function is in use. w RECEIVE INDICATOR Appears while receiving a signal or when the squelch is open. e TUNE INDICATOR Appears or disappears when the connected au- tomatic tuner is tuned completely, depending on connected antenna tuner type. Flashes while tuning. r TRANSMIT INDICATOR Appear

33、s while transmitting. Flashes while transmit frequency is indicated. t ALARM INDICATOR This indicator appears only some versions. Appears while 2-tone alarm is emitting or transmit- ting y FUNCTION INDICATORS “P.AMP” appears when preamp is activated. “ATT” appears when the RF attenuator is acti- vat

34、ed. “NB” appears when the Noise Blanker is acti- vated. “BK” appears when the semi break-in function is selected in quick set mode. “F-BK” appears when the full break-in function activates in CW mode. (p. 23) “VOX” appears when the VOX function is se- lected in quick set mode. “COM” appears when the

35、 speech compressor ac- tivates in SSB mode. “SCAN” appears during scanning. Flashes when scan is paused. u SIGNAL/SQL/RF-GAIN METER Functions as an S-meter while receiving. Functions as a Power, ALC or SWR meter while transmitting. (p. 16) i VFO/MEMORY INDICATOR “MEMO” appears during regular operati

36、on. This indicator appears only some versions. “VFO” appears during VFO operation. 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 di

37、ffer- ent frequencies between transmit and receive are programmed, is selected. !2 RIT INDICATOR (p. 19) Appears when the RIT function is in use. !3 CHANNEL READOUT Shows the memory names, or stored frequency of the selected channel. !4 REVERSE INDICATOR (p. 15) Appears when the CW reverse or RTTY r

38、everse mode is selected. !5 WIDE/NARROW FILTER INDICATORS (pgs. 21, 22) “ ” appears when the wide IF fi lter is selected. “” appears when the narrow IF filter is se- lected. !6 MODE INDICATORS (p. 15) Indicates the temporarily selected operating mode. !6!4!5 uoi r e w !0 !3 !1 t y q !2 5 2PANEL DESC

39、RIPTION I Rear panel q ANTENNA TERMINAL ANT (p. 9) Connects a 50 antenna with a PL-259 connector and a 50 coaxial cable. w DC POWER SOCKET DC 13.8V (p. 10) Accepts 13.8 V DC through the supplied DC power cable. e TUNER CONTROL SOCKET TUNER (p. 11) Accepts the control cable from an optional antenna t

40、uner. r REMOTE JACK REMOTE (p. 11) For use with a personal computer for remote opera- tion of transceiver functions, and data cloning be- tween transceivers. t EXTERNAL SPEAKER JACK EXT SP Connects an 8 external speaker, if desired. When an external speaker is connected, the inter- nal speaker does

41、not function. y ACCESSORY SOCKET ACC (p. 6) Enables connection to external equipment such as a TNC for data communications or a linear ampli- fi er, etc. u ELECTRONIC KEYER JACK KEY Accepts a paddle to activate the internal electronic keyer. Selection between the internal electronic keyer and straig

42、ht key operation can be made in initial set mode. i ALC INPUT JACK ALC Connects to the ALC output jack of a non-Icom lin- ear amplifi er. o SEND CONTROL JACK SEND Goes to ground while transmitting to control exter- nal equipment such as a linear amplifi er. Max. control level: 16 V DC/2 A !0 GROUND TERMINAL GND (p. 9) Connects the terminal to gr