Instruction Manual
Page 2
...their respective holders. SAVE THIS INSTRUCTION MANUAL. All other products or brands are registered trademarks of Icom Incorporated (Japan) in the United States and other countries. NOTE Iinf jduirsyr,efgiraerdoer de,leincctroicnvsehnoicekn.ce only. and the... Kingdom, Germany, France, Spain, Russia and/or other countries. Pentium is a registered trademark of personal TRADEMARKS Icom, Icom Inc. This manual contains important safety and operating instructions for the IC-R75. IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the receiver. i
...their respective holders. SAVE THIS INSTRUCTION MANUAL. All other products or brands are registered trademarks of Icom Incorporated (Japan) in the United States and other countries. NOTE Iinf jduirsyr,efgiraerdoer de,leincctroicnvsehnoicekn.ce only. and the... Kingdom, Germany, France, Spain, Russia and/or other countries. Pentium is a registered trademark of personal TRADEMARKS Icom, Icom Inc. This manual contains important safety and operating instructions for the IC-R75. IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the receiver. i
Instruction Manual
Page 3
...This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in a particular installation. DO NOT place the receiver in excessively dusty environments or in a secure place to the [DC13.8V] jack on the serial number label comply with the limits for ...in accordance with temperatures below -10°C (+14°F) or above +60°C (+140°F). Versions of the IC-R75 which display the "CE" symbol on the receiver rear panel. PRECAUTIONS RWARNING NEVER apply AC to radio communications. RWARNING NEVER let metal, wire or other objects touch any ...
...This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in a particular installation. DO NOT place the receiver in excessively dusty environments or in a secure place to the [DC13.8V] jack on the serial number label comply with the limits for ...in accordance with temperatures below -10°C (+14°F) or above +60°C (+140°F). Versions of the IC-R75 which display the "CE" symbol on the receiver rear panel. PRECAUTIONS RWARNING NEVER apply AC to radio communications. RWARNING NEVER let metal, wire or other objects touch any ...
Instruction Manual
Page 4
... AD-55, AD-55A, AD-55S and AD-55V have different shapes. SUPPLIED ACCESSORIES The receiver comes with the following to reduce the noise. • Ground the receiver. • When another AC powered equipment is connected to the receiver, plug the AC adapter into a different AC outlet than the equipment. • Keep the...
... AD-55, AD-55A, AD-55S and AD-55V have different shapes. SUPPLIED ACCESSORIES The receiver comes with the following to reduce the noise. • Ground the receiver. • When another AC powered equipment is connected to the receiver, plug the AC adapter into a different AC outlet than the equipment. • Keep the...
Instruction Manual
Page 5
... 2 - 6 ■ Front panel 2 ■ Function display 5 ■ Rear panel 6 3 INSTALLATION AND CONNECTIONS ....... 7 - 10 ■ Grounding 7 ■ Receiver stand 7 ■ Optional bracket and carrying handle 7 ■ Connections 8 ■ Antenna connection 9 ■ Tape recorder connections 9 ■ Transceive function 9 ■ ...9632; Read me first 11 ■ Using the keypad 11 ■ Frequency setting 12 ■ Dial lock function 13 5 RECEIVE FUNCTIONS 14 - 20 ■ Mode selection 14 ■ Squelch and RF gain 14 ■ Twin PBT operation 15 ■...
... 2 - 6 ■ Front panel 2 ■ Function display 5 ■ Rear panel 6 3 INSTALLATION AND CONNECTIONS ....... 7 - 10 ■ Grounding 7 ■ Receiver stand 7 ■ Optional bracket and carrying handle 7 ■ Connections 8 ■ Antenna connection 9 ■ Tape recorder connections 9 ■ Transceive function 9 ■ ...9632; Read me first 11 ■ Using the keypad 11 ■ Frequency setting 12 ■ Dial lock function 13 5 RECEIVE FUNCTIONS 14 - 20 ■ Mode selection 14 ■ Squelch and RF gain 14 ■ Twin PBT operation 15 ■...
Instruction Manual
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...• Turn the optional DC power supply ON in use. 2 PANEL DESCRIPTION ■ Front panel Speaker Function display (p. 5) !8 !7 !6 !5 q w COMMUNICATIONS RECEIVER SSB CW/RTTY FIL AM FM TS 1 2 3 ABC DEF 4 5 6 GHI JKL MNO 7 8 9 PRS TUV WXY . 0 QZ ENT PHONES POWER ... t y u io !0 !1 q POWER SWITCH [POWER] ➥ Push momentarily to turn power OFF. t P ASSBAND TUNING CONTROLS [TWIN PBT] (p. 15) Adjust the receiver's "passband width" of the tuning dial. !0 LOCK/SPEECH SWITCH [LOCK] (pgs. 13, 34) ➥ Toggles the frequency lock function ON and OFF. ➥ ...
...• Turn the optional DC power supply ON in use. 2 PANEL DESCRIPTION ■ Front panel Speaker Function display (p. 5) !8 !7 !6 !5 q w COMMUNICATIONS RECEIVER SSB CW/RTTY FIL AM FM TS 1 2 3 ABC DEF 4 5 6 GHI JKL MNO 7 8 9 PRS TUV WXY . 0 QZ ENT PHONES POWER ... t y u io !0 !1 q POWER SWITCH [POWER] ➥ Push momentarily to turn power OFF. t P ASSBAND TUNING CONTROLS [TWIN PBT] (p. 15) Adjust the receiver's "passband width" of the tuning dial. !0 LOCK/SPEECH SWITCH [LOCK] (pgs. 13, 34) ➥ Toggles the frequency lock function ON and OFF. ➥ ...
Instruction Manual
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...is required. @3 NOISE BLANKER SWITCH [NB] (p. 15) Toggles the noise blanker ON and OFF. 2 PANEL DESCRIPTION ■ Front panel (continued) Function display (p. 5) COMMUNICATIONS RECEIVER SSB CW/RTTY FIL AM FM TS 1 2 3 ABC DEF 4 5 6 GHI JKL MNO 7 8 9 PRS TUV WXY . 0 QZ ENT PHONES POWER AF RF/SQL...between preamp-1 and preamp-2 or turn the preamp OFF. @0 ATTENUATOR SWITCH [ATT] (p. 16) Push to turn the optional automatic notch filter for receiving AM signals ON and OFF. Functions in memory mode. ➥ Toggles the memory name indication ON and OFF when pushed for 2 sec. in...
...is required. @3 NOISE BLANKER SWITCH [NB] (p. 15) Toggles the noise blanker ON and OFF. 2 PANEL DESCRIPTION ■ Front panel (continued) Function display (p. 5) COMMUNICATIONS RECEIVER SSB CW/RTTY FIL AM FM TS 1 2 3 ABC DEF 4 5 6 GHI JKL MNO 7 8 9 PRS TUV WXY . 0 QZ ENT PHONES POWER AF RF/SQL...between preamp-1 and preamp-2 or turn the preamp OFF. @0 ATTENUATOR SWITCH [ATT] (p. 16) Push to turn the optional automatic notch filter for receiving AM signals ON and OFF. Functions in memory mode. ➥ Toggles the memory name indication ON and OFF when pushed for 2 sec. in...
Instruction Manual
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...is installed. u PREAMP INDICATOR (p. 16) Appears when antenna preamp-1 or preamp-2 is in VFO and memory modes. !7 FREQUENCY READOUT Shows the operating frequency. !8 RECEIVE INDICATOR Appears while receiving a signal or when the squelch is open. !9 MODE INDICATORS (p. 14) Indicate the selected operating mode. @0 REVERSE MODE INDICATOR (p. 17) Indicates a reverse ..."AGC OFF" appears when the AGC function is turned OFF. ➥ "F.AGC" blinks while scanning or while using band scope via an optional RS-R75. !3 MEMORY MODE INDICATOR (p. 21) Indicates memory mode is selected.
...is installed. u PREAMP INDICATOR (p. 16) Appears when antenna preamp-1 or preamp-2 is in VFO and memory modes. !7 FREQUENCY READOUT Shows the operating frequency. !8 RECEIVE INDICATOR Appears while receiving a signal or when the squelch is open. !9 MODE INDICATORS (p. 14) Indicate the selected operating mode. @0 REVERSE MODE INDICATOR (p. 17) Indicates a reverse ..."AGC OFF" appears when the AGC function is turned OFF. ➥ "F.AGC" blinks while scanning or while using band scope via an optional RS-R75. !3 MEMORY MODE INDICATOR (p. 21) Indicates memory mode is selected.
Instruction Manual
Page 10
... input when grounded. The plug may cause voltage drops and ignition noise may be sent to an Icom CI-V system transceiver or another receiver for CI-V transceive operation with a transceiver. 2 PANEL DESCRIPTION ■ Rear panel qw e r t y u i o !0 q RECORDER REMOTE JACK [REC REMOTE... external speaker is required. DO NOT use a cigarette lighter socket as a power source when operating in set mode. (p. 32) w RECORDER JACK [REC] Outputs receive audio signals. o ANTENNA 1 CONNECTOR [ANT 1] (p. 9) Connects a 50 Ω antenna with a PL-259 connector and a 50 Ω coaxial cable. !0...
... input when grounded. The plug may cause voltage drops and ignition noise may be sent to an Icom CI-V system transceiver or another receiver for CI-V transceive operation with a transceiver. 2 PANEL DESCRIPTION ■ Rear panel qw e r t y u i o !0 q RECORDER REMOTE JACK [REC REMOTE... external speaker is required. DO NOT use a cigarette lighter socket as a power source when operating in set mode. (p. 32) w RECORDER JACK [REC] Outputs receive audio signals. o ANTENNA 1 CONNECTOR [ANT 1] (p. 9) Connects a 50 Ω antenna with a PL-259 connector and a 50 Ω coaxial cable. !0...
Instruction Manual
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... wall, in a vehicle, etc. Make the distance between the [GND] terminal and ground as short as shown. Flat washer ■ Receiver stand The base of two angles depending on the rear panel. Attach the MB-23 carrying handle with the supplied rubber feet as possible. R ... ■ Optional bracket and carrying handle D Mounting bracket An optional IC-MB5 mobile mounting bracket is approx. 3 kg. For best results, connect a heavy gauge wire or strap to easily carry and transport the receiver. 3 INSTALLATION AND CONNECTIONS ■ Grounding To prevent accidents involving electr ...
... wall, in a vehicle, etc. Make the distance between the [GND] terminal and ground as short as shown. Flat washer ■ Receiver stand The base of two angles depending on the rear panel. Attach the MB-23 carrying handle with the supplied rubber feet as possible. R ... ■ Optional bracket and carrying handle D Mounting bracket An optional IC-MB5 mobile mounting bracket is approx. 3 kg. For best results, connect a heavy gauge wire or strap to easily carry and transport the receiver. 3 INSTALLATION AND CONNECTIONS ■ Grounding To prevent accidents involving electr ...
Instruction Manual
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ANTENNA 1 (p. 9) Connect a Yagi antenna; ANTENNA 2 Connect a long wire antenna; 3 INSTALLATION AND CONNECTIONS ■ Connections HEADPHONES COMMUNICATIONS RECEIVER SSB CW/RTTY FIL AM FM TS 1 2 3 ABC DEF 4 5 6 z JKL MNO 7 8 9 PRS TUV WXY . impedance: 500 Ω. z 0 ENT PHONES POWER AF RF/SQL TWIN PBT ...
ANTENNA 1 (p. 9) Connect a Yagi antenna; ANTENNA 2 Connect a long wire antenna; 3 INSTALLATION AND CONNECTIONS ■ Connections HEADPHONES COMMUNICATIONS RECEIVER SSB CW/RTTY FIL AM FM TS 1 2 3 ABC DEF 4 5 6 z JKL MNO 7 8 9 PRS TUV WXY . impedance: 500 Ω. z 0 ENT PHONES POWER AF RF/SQL TWIN PBT ...
Instruction Manual
Page 13
.... When using a 500 Ω long wire antenna, use [ANT 1] connector for recording control. (1 A/DC max.) IC-R75 [AUX IN] or [LINE IN] jack [REC REMOTE] [REC OUT] 350 mVrms 4.7 kΩ ■ Transceive function Icom CI-V transceivers or receivers can be connected via the [REMOTE] jack. If a tape recorder has a control terminal, this jack can...
.... When using a 500 Ω long wire antenna, use [ANT 1] connector for recording control. (1 A/DC max.) IC-R75 [AUX IN] or [LINE IN] jack [REC REMOTE] [REC OUT] 350 mVrms 4.7 kΩ ■ Transceive function Icom CI-V transceivers or receivers can be connected via the [REMOTE] jack. If a tape recorder has a control terminal, this jack can...
Instruction Manual
Page 14
... and AFSK (SSTV) connections To connect a terminal unit, TNC or scan converter, refer to the diagram below for connection. e S et the receiver to the desired frequency as below. D System requirements To use this program, the following hardware and software are required: • IBM PC compatible computer ... remote control of hard disk space • At least 640 × 480 pixel, high color (16 bit) display Supplied RS-232C cable (OPC-743) PC IC-R75 10 w S elect RTTY mode (or USB, CW modes for amateur RTTY): [Setting frequency (displayed freq.)] = [Desired freq.] + [Mark freq.] to [...
... and AFSK (SSTV) connections To connect a terminal unit, TNC or scan converter, refer to the diagram below for connection. e S et the receiver to the desired frequency as below. D System requirements To use this program, the following hardware and software are required: • IBM PC compatible computer ... remote control of hard disk space • At least 640 × 480 pixel, high color (16 bit) display Supplied RS-232C cable (OPC-743) PC IC-R75 10 w S elect RTTY mode (or USB, CW modes for amateur RTTY): [Setting frequency (displayed freq.)] = [Desired freq.] + [Mark freq.] to [...
Instruction Manual
Page 15
.... e P ush the numeral keys to enter the frequency digits below 1 MHz. • If a key is pushed for 2 sec. 4 FREQUENCY SETTING ■ Read me first The receiver uses memory channels for the kHz digits. •To set to 28.00 MHz 2 8 ABC TUV ENT USB R X USB R X USB R X •To set to 850...
.... e P ush the numeral keys to enter the frequency digits below 1 MHz. • If a key is pushed for 2 sec. 4 FREQUENCY SETTING ■ Read me first The receiver uses memory channels for the kHz digits. •To set to 28.00 MHz 2 8 ABC TUV ENT USB R X USB R X USB R X •To set to 850...
Instruction Manual
Page 18
... level Squelch is the 12 o'clock position since this sets RF gain to the max. Push mode switch momentarily. ■ Squelch and RF gain The receiver uses the same control, [RF/SQL], to adjust one of either the RF gain or the squelch. [RF/SQL] adjusts either the RF gain or.... S-meter squelch Shallow Deep • When set as the [RF] control Maximum RF gain Adjustable range Minimum RF gain 14 5 RECEIVE FUNCTIONS ■ Mode selection The following modes are available in the IC-R75: SSB (LSB/USB), CW, CW REV (CW reverse), FM, AM, RTTY and RTTY REV (RTTY reverse). ➥ Push [SSB...
... level Squelch is the 12 o'clock position since this sets RF gain to the max. Push mode switch momentarily. ■ Squelch and RF gain The receiver uses the same control, [RF/SQL], to adjust one of either the RF gain or the squelch. [RF/SQL] adjusts either the RF gain or.... S-meter squelch Shallow Deep • When set as the [RF] control Maximum RF gain Adjustable range Minimum RF gain 14 5 RECEIVE FUNCTIONS ■ Mode selection The following modes are available in the IC-R75: SSB (LSB/USB), CW, CW REV (CW reverse), FM, AM, RTTY and RTTY REV (RTTY reverse). ➥ Push [SSB...
Instruction Manual
Page 19
... the same position shifts the IF. Variable range depends on set to turn the noise blanker ON or OFF. • When using the noise blanker, received signals may be distorted if they are excessively strong. • The noise blanker function in AM mode can be deactivated depending on the filter selection...
... the same position shifts the IF. Variable range depends on set to turn the noise blanker ON or OFF. • When using the noise blanker, received signals may be distorted if they are excessively strong. • The noise blanker function in AM mode can be deactivated depending on the filter selection...
Instruction Manual
Page 20
...VFO "ANT1" appears when the [ANT1] connector is turned OFF. ■ Antenna selection 2 types of antenna can be connected to this function ON when receiving weak signals. ➥ Push [P.AMP] to improve the S/N ratio and sensitivity. Use AGC slow for 2 sec. AGC fast for...dB attenuator function ON and OFF. • "ATT" appears when the attenuator is turned ON. ■ AGC time constant The AGC (Automatic Gain Control) controls receiver gain to toggle between fast and slow. • "F.AGC" appears when the fast time constant is selected. • "AGC" appears when the slow time ...
...VFO "ANT1" appears when the [ANT1] connector is turned OFF. ■ Antenna selection 2 types of antenna can be connected to this function ON when receiving weak signals. ➥ Push [P.AMP] to improve the S/N ratio and sensitivity. Use AGC slow for 2 sec. AGC fast for...dB attenuator function ON and OFF. • "ATT" appears when the attenuator is turned ON. ■ AGC time constant The AGC (Automatic Gain Control) controls receiver gain to toggle between fast and slow. • "F.AGC" appears when the fast time constant is selected. • "AGC" appears when the slow time ...
Instruction Manual
Page 21
... Hz) (800 Hz) CW mode (USB side) Desired signal Interference (600 Hz) (400 Hz) CW REV mode (LSB side) ■ CW pitch control The received CW audio pitch and monitored CW audio can be adjusted to suit your preferences (300 to set the desired CW audio pitch. • CW audio... pitch is reversed between RTTY and RTTY reverse (RTTY REV). • Check the receive signal. 17 To receive a reversed RTTY signal correctly, select RTTY reverse mode. w P ush [CW/RTTY] for 2 sec. q Push [(ANT) SET] momentarily to exit set mode...
... Hz) (800 Hz) CW mode (USB side) Desired signal Interference (600 Hz) (400 Hz) CW REV mode (LSB side) ■ CW pitch control The received CW audio pitch and monitored CW audio can be adjusted to suit your preferences (300 to set the desired CW audio pitch. • CW audio... pitch is reversed between RTTY and RTTY reverse (RTTY REV). • Check the receive signal. 17 To receive a reversed RTTY signal correctly, select RTTY reverse mode. w P ush [CW/RTTY] for 2 sec. q Push [(ANT) SET] momentarily to exit set mode...
Instruction Manual
Page 22
... when narrow IF filters are not selected by default. Optional filters are selected. When an optional filter is automatically memorized in the table at right. 5 RECEIVE FUNCTIONS ■ Filter selection The filter selection switches the IF passband width as shown in each mode. IF 9 MHz 455 kHz Filter FL-100 FL...
... when narrow IF filters are not selected by default. Optional filters are selected. When an optional filter is automatically memorized in the table at right. 5 RECEIVE FUNCTIONS ■ Filter selection The filter selection switches the IF passband width as shown in each mode. IF 9 MHz 455 kHz Filter FL-100 FL...
Instruction Manual
Page 23
... FL-257, respectively for 2 sec. Optional filters are stored depending on operating modes. D Wide/narrow filter setting q P ush [FIL] for 455 kHz IF filter selection. 5 RECEIVE FUNCTIONS ■ Filter set mode When an optional filter is set to 'OFF.' 19 e R otate the tuning dial to select a filter.
... FL-257, respectively for 2 sec. Optional filters are stored depending on operating modes. D Wide/narrow filter setting q P ush [FIL] for 455 kHz IF filter selection. 5 RECEIVE FUNCTIONS ■ Filter set mode When an optional filter is set to 'OFF.' 19 e R otate the tuning dial to select a filter.