IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the revolver SAVE THIS INSTRUCTION MANUAL. This manual contain important safety and operating instructions forth IC-R75. EXPLICIT DEFINITIONS Personal injury; fire hazard or electric shock may occur disregarded; inconvenience only. o risk of personality, fire or electric shock. PRECAUTIONS NEVER apply AC 10 the [DODGE 8] jack on the receiver rear panel; This could cause a fire or mini the receiver, NEVER apply more than 16 V.
2 M Front panel PANEL DESCRIPTION Speaker fearsome | Tamest © POWER SWITCH [POWER] w Push momentarily to furn: power ON: *Turn the optional DG power supply DN in advance; = Punch for 2 sec. to tum power OFF. B HEADPHONE JACK [PHONES] (p.8) Accepts headphones. «\Wuhan headphones dre connected, the internal speaker connectable external speaker does: not function. © AF CONTROL [AF] (inner introit) Arias the audio output level from the speaker. @ RF GAIN SQUELCH CONTROL [RF/SQL] (outer control: pgs.
@ MEMORY CHANNEL UP/DOWN SWITCHES PLENITUDE A (p.21) w Select a memory channel. ‘ w Select a set mode-contents while inset mode. = Select & timer or ime indication while cockiness diction. w Select a filter set mode contents while in filter set mode. & MEMORY WRITE SWITCH [MW] (pgs: 22,27} prioresses the displayed frequency and operating mode into the selected memory channel when pushed for 2 sec. w Toggles the programmed scan and auto memory write scan when pushed. ® CLEAR SWITCH [CLR] (p.
2 PANEL DESCRIPTION B Front panel (continued) Function display PREAMBLE SWITCH [P.AMP] (p. 16} Push {o toggle between pram-1 and preamble or. tum the preamble OFF. @ ATTENUATION SWITCH [ATT] (p. 16) Push {0 toggle 1he 20 dB attenuation function ON and OFF. & NOISE REDUCTION SWITCH [NR] (0. 20) w Toggles the optional noise reduction function ON and OFF when pushed. Functions in 588, CW. and RATTY modes. An optional UT-108 bse UNIT IS required. » Enters noise reduction. level set mods when pushed for 2 sec.
PANEL DESCRIPTION 2 M Function display WWW 8 i _ _. " PREAMBLE 12 ATT ANTI Efl:OFF e T } ORI ® © MINTER INDICATOR (5. 28) Appears when power fervor timer or sleep timer is infuse: € DSP UNIT INDICATOR (p. 35} Appears when an optional UT-106 pap u Nit i installed: © AUTOMATIC NOTCH FILTER INDICATOR (p. 20) Appears wherewith optional automatic pole filters noose. O NOISE REDUCTION INDICATOR (p.20) ‘Appears warn the optional noise reduction function: sin use. © LOCK INDICATOR (p.
2 PANEL DESCRIPTION W Rear panel EEO RECORDER REMOTE JACK [REC REMOTE] Controls the dunning of '8 ape recorder for recording: Connects: therefor REMOTE jack on a ape recorder. +This function can ke muted OFF in set mode. (5. 32) 9 RECORDER JACK [REC] Outputs receive audio signals: Disconnectedness ALX: ‘or LINE IN jack on a tape recorder. © AS-232C CONNECTOR [RS-232C] Connects an BS:282C cable. An RS:232C cabs Gan be used to connect the receiver to a PC.
INSTALLATION AND CONNECTIONS M Grounding To prevent accidents involving electricity and interference farm transceivers, ground the receiver through the [GND] terminal on the rear panel. For best results, connect a heavy gauge wire or strap 162 ion earth-stink copper rod. Make the distance be: tween the [GND] terminal and: ground as'short apostasy sable; 7 (/A WARNING: NEVER connect the [GND] é Terminal 1o a gas or electric pipe, since the connect son cold cause an explosion or electric shook: N .
3 INSTALLATION AND CONNECTIONS M Connections HEADPHONES REMOTE (p. 9, 32) ANTENNA 2 ANTENNA Used for computer control and transceiver. Connects dong wire Connect @ Magi antenna; : antenna:impedance: 5006 impedance: 50:Q. MUTE CONTROL i JACK RECORDER/ RECORDER CONTROL (p. 9) RS-232C JACK (p. 10) EXTERNAL GROUND (5. 7) DC13.8V JACK SPEAKER (p.
W Antenna connection Antennas play a very important role in receiver operation. Connecting a corporeality antenna 1o the receiver wilt spacesuit in less than optimum performance. INSTALLATION AND CONNECTIONS 3 When using a 50 Q antenna; use [ANT 1] connector for connection: When using & 500 € long wire antenna, use ANT 2l terminal for connection: P1:259 CONNECTOR INSTALLATION-EXAMPLE D (amm Side the coupling ring down.: Strip the gable e ; jacket and soft solder.
3 INSTALLATION AND CONNECTIONS M FSK and ASK (SST) connections To connect a terminal unit, TNC or scan converter, 11 Frequency settings depend on the mode used. refer to the diagram below. % FM mode: , f [Setting frequency: (displayed raqi)i= [Desired ) Connect a terminal unit as below. g freq] (@ Elect Modernity {or USB, CW modes for HE USE mode: band data communications). [Setting ‘frequency {displayed (3) 8et the receiver to the desired frequency as at Mark and Space freq] . %’ right.
M Read me first The receiver uses memory channels tor storage of fre: quenches {gs well as mode, tuning steps; et} Wii en turning power OFF or changing memory. channels, the previously displayed frequency cannot be recalled un: Toss it has bean stored info’a memory channel: ush 'L{ 1 f' ATTN S Yes Afic “BURBANK appears above the memory channel readout Until MW is pushed for 2 sec. B Using the keypad () Push the numeral keys on the keypad o enter the MHZ digits for the desired frequency.
12 4 FREQUENCY SETTING M Frequency settling Rotate the tuning dial to change the frequency: »The frequency changes in increments determined by the selected tuning step (aov ballgown. s\When the lock function:is activated ("LOCKET appears): the frequency cannot be ‘changed via tuning dial. Push [TS] one or more times 1o select a quick keening step.
FREQUENCY SETTING 4 &1 MHz quick tuning step The quick tuning step function altos you to change . ' the frequency in 1 MHz steps when rotating the turducken fining step ing dial. / indicator T Push [TS] one of more times unfit the 1 MHZ fining {(_i UB step indicator; v " appears above the 1 Mz indict.
5 M Mode selection RECEIVE FUNCTIONS The following nodes are available in the |C-R75; SSB (LIAISE. CW. OW REV (CW reverse), EM. AN detection AM), ATTY and RITZY REVERT reverse). w Pushiness] o toggle between LOB and LSS w momentarily {0 {ogle between C Wand RATTY. e Push {ICW/RTTY] for 2 sec. 10 toggle between CW and CW reverse or RATTY and RATTY fevers. Pushiness toggle between AM and 5-AM: #48-" blinks: when automatic mode selection between S-AM and AM modes is in use.
8 Twin PBT operation RECEIVE FUNCTIONS 5 The twin PBT (Pass band Tuning) function electronics: call narrows the IF pass band widths to reduce interference. Moving bath [TWIN PBT] controls towhee same position shifts the IE. Variable range depends on the filler selection. +1.29 KHz in 15 Hz steps and +258 kHz in 3 Hz steps are available. 1F peter frequency: interference Desired signal +[TWIN PBT] should normally be set 1o the canter positions when there is ng interference.
5 RECEIVE FUNCTIONS B Preamble The preamble amplifies received signals in the front end circuit to improve the SIN ratio and sensitivity: Turn this function ON when receiving weak rials. w Pusey [RAMP] to {ogle between prearranged preamble-2 or turn the preamble OFF: 8005 e SPREADER? appears while the preamble is activated.
B CW reverse mode RECEIVE FUNCTIONS B CW:R (CW Reverse) mode receives CW signals with 4 reverse side CW counterpoint that'of LSB and USB modes. Use when interfering signals are near 3 desired signal and you want to.change the interference tore. 3 Push [CW/RTTY] once or twice {o select CW. mode. @ Push [CW/RTTY] for 2 sec. fo toggle between CW and CW reverse (CW REV). *Check the interfering tons.
M Filter set mode RECEIVE FUNCTIONS B When an optional filter is installed, set the optional filters in filter set mode, Optional filters are not selected by default. © Optional filter setting (@ Push [FIL] for 2 sec. to enter filter set mode. ~I & blank memory channel has been selected, push [V/M] 10 select VEQ mode In advance. 2 Push: [URP DNI one o more times until “5P1"appaars for 9:MHz IF filter setting or "'oP2" appears for 485 kHz IE filter sifting.
ol 5 RECEIVE FUNCTIONS W Optional noise reduction function Athenian optional UT-106 is installed (DSP appears in the function display), noise reduction: function'can: be used. The noise reduction function reduces noise components and picks out desired signals which are buried noisiness: The received AF signals are converted 1o digital signals and thee the desired signals are separated from the noise, Tr Push [Newbie tum the noise reduction ON. *Indicator appears.
MEMORY ope Ration O N B Memory channels The receiver has 101 memory channels. The memory. mode is vary USAF for quickly changing to fen-used frequencies. All 101 memory channels are tune able which means the:programmed frequency: can-be nude temporarily with the fining dial, stc. in memory mode: One frequency undone mode in each memory.channel: One frequency and one mode in each memory channel as scan foresight programmed scan.
6 MEMORY OPERATION B Memory channel programming Memory channel programming can be preformed e thee in VEQ mode fin memory: rode; 4 Programming in VFO mode {3 Set the desired frequency And operating mode in VEQ mode: @) Push DNJ several times 1o select the desired memory channel. *“BLANK appears i the selected memory channel is a Blank channel {and does not have contention. 3 Push [MW] for 2 sec. to program the displayed fre« quench and operating mode into.
M Frequency transferring The frequency and operating made ina memory Chan: i angelical transferred 1o the VFO: MEMORY OPERATION 6 Frequency transferring can be performed neither VRO mode o memory mode. © Transferring in VEQ mode This is useful for transferring programmed contents to VFO, (i) Sol act VEO mods with {2 Select the memory: channel 1o be transferred with [P A]or [WON]. +"BLANK" appears if the tinseled mummery channel is a bank channel (and does not have confluent.
B MEMORY OPERATION W Memory names Al memory channels (including scan ages) canine tagged with alphanumeric names char ac: tors gate: Tellers {capitals-except o), numerals and spaces can be used. Numerals can only be used:for the thiamine 8th digits. < Turning memory name indication ON/OFF (D Select memory mode with @ Push [SEL] for 2 see. to turn memory name indication ON; *Frequency disappears and 2 memory ahem appears i programmed.
B Scan types 7 SCANS PROGRAMMED SCAN AUTO MEMORY WRITE SCAN Repeatedly scans: between: Iwo: scan edge frequencies {scan sedge memory channels P1 and P2}, Auto memory. written: automatically memorizes paused Frequencies into memory channels 801099 Sean edge Span odor w A ‘This scan. operates i VRO mode. MEMORY SCAN Premeditated scans all programmed mimicry channels.
o 7 scans W Programmed scan operation (1) Select VEO mode with @ Select the desired operating mode. ~T\he ‘operating mode can also be changed while scanning. ) Set [RE/SQL] open or closed. *See previous page for scan condition. »f the FIREBOX] control function is set as RE control the squelch always opens; Seeps. 14, 30 for details. Push [SCAN] 1o start the programmed Sean. " SCAN appears wheels scanning: ™ 9588 el .
M Priority watch operation so Ans 7 Priority watch checks for signals ona frequency every. 5 sec. while operating on a VEO frequency. (D) Select memory mode with [VIM. @) Select the desired memory chains! 1o be watched With [UP ] or [LEWD 3) Select VFO mode. @ closed. «if the [RF/SQL] control function is set as AF control the. squelch always opens. See pas. 14, 30 for details. B Push [SCAN] for 2 sec: to start priority watch: u,‘ lgt’ Whens signals received.
28 8 CLOCK AND TIMERS M Setting the current time The receiver hag a built-in 24 -hour clock with power off dimer functions; This s useless when logging SW's, BC's and so on. (1) Push [CLOCK] 1o select clock indication mode. »Currant time:and ‘CL appear; 245 Lt @ Push [ANTI SET] for 2 sac. 1o enter time setting rendition. *Current ime flashes. (3 Set the current time using the tuning disk or push keypad dding 4-digit 24 hour system: @ Push [Enthrone set the time. *Push CLERIC to cancel the setting.
W Setting power-off time CLOCK AND Timer S 8 The receiver can be set 1o turn OFF automatically ata specified ime. {Di Push [CLOCK] to select slick indication mode. |2 Push twice 10 select power-off fer screen. *Parolee ima and "appear (3) Push [(pantyhose] for 2 sec, to enter time setting condition. *Power off time flashes. +Push PANTIES T momentarily whet the powerful niter. turned ON: Set the desired time Using the tuning dial: or push keypad dding 4-digit 24 hour system; (& Push [ENT] to set the time.
30 9 set mope M Set mode description Set mode 13 used for programming infrequently changed values or conditions of functions. © Set mode operation @) Push [(any SET] to enter the sef mode. (@ Push [UPA] of [W.DNJ 1o select the desired item: 3 Set the desired condition using the tuning dial; Push [(ANT) SET] to exit the set mode, *RF/squelch control The [RF/SOL] control can be set as the squelch con: frog (default: RE gain s {iced at maximum).
SET MODE 9 *Sean resume This item sets the scan resume function ON or OFF: ol scan resumes 10 sec. after sipping on a signal {or 2'sec, after a signal disappears) *4oF scan does not resume after stopping | 866 p. 25 for scanning details. *Sean speed The receiver has 2 speeds for scanning, Right and low. See p.
d 9 sET MODE s Recorder remote This item sets the [REC REMOTE] jack function ON or OFF: REL RN an +Ci-V address To distinguish equipment, each CI-V transceiver of receiver haste own com standard address in hexadecimal code The IX-R75's address is 5Ah. When 2 or more 1-R75's are connected to nonfictional CT-17 G-V LEVEL CONVERTER; rotate the tuning dial 1o select a different address for sate IC-R7S In the range Oth to 7Fh; »CI-V baud rate This item sets the data transfer rats. 3" (300 bps).
moper 9 s Speech speed When the optional UT-102 OBLIGE SYNTHESIZER UNIT is. installed; you can select between faster ar slower synthesizer output. See p. 34-for unit installation. *Speech S-level When the optional UT-102 VOICE SYNTHESIZER UNIT IS installed: your can have signal level. frequency, mode and current time: announcement. Signal level an: announcement cane deactivated it desired.
10 opt Ion INSTALLATIONS W Opening the receiver's case Folio the case and cover opening procedures shown here when you instantaneous an optimization or adjust: an internal unit, eic Z CAUTION: DISCONNECT the DG power cable % therefrom receiver before performing any Work o the % receiver. Otherwise, there is danger of electric shock % and/or equipment damage. (D Remove the 2 craws trim the deft side of the receiver 1o remove an optional carrying handier, it nec: essay.
M UT-106 pse innit OPTION INSTALLATIONS 10 The UT:106 provides AF DSP functions such as noise reduction and auto note: @) Remove the top and bottom covers. @ Remove the shielding plate. 3) Remove the connection cable [P1247) from J1221 ‘on the MAIN Unit: Connect the.cable into J1. on the U108, @ Plug the connection cable (P1) from the UT106 1o J1221 on the MAIN unit. G Plug the flat cabs into J3 on the UT-106 and to J1231 on the MAIN unit. +Take care of the conductor direction.
M Fuse replacement 1 a fuse blows or the receiver stops functioning. try to find: the source of the problem; and: replace the damaged fuse with-a new, rated fuse. 7 CAUTION: DISCONNECT the DC power cable from the receiver when ganging a fug.
