User manual ICOM IC-R2500 - INSTRUCTION MANUAL

INSTRUCTION MANUAL iR2500 COMMUNICATION RECEIVER 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. FOREWORD Thank you for purchasing this Icom receiver. The IC-R2500 COMMUNICATIONS RECEIVER is designed and built with Icom's state of the art technology and craftsmanship. With proper care, this receiver should provide you with years of troublefree operation. We want to take a couple of moments of your time to thank you for making the IC-R2500 your radio of choice, and hope you agree with Icom's philosophy of "technology first." Many hours of research and development went into the design of your IC-R2500. IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the receiver. SAVE THIS INSTRUCTION MANUAL-- This instruction manual contains important operating instructions for the IC-R2500. EXPLICIT DEFINITIONS DEFINITION Personal injury, fire hazard or electric shock R WARNING! may occur. CAUTION NOTE Equipment damage may occur. Recommended for optimum use. No risk of personal injury, fire or electric shock. WORD D FEATURES Wide frequency coverage with all-mode receive Both Remote controller operation and PC control application are available ANF and NR functions are available (Only when the optional DSP unit is installed.) IF shift function Dualwatch operation/Diversity operation DV and P25 Digital modes are available (Only when the specific digital unit is installed.) i Icom, Icom Inc. and the logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries. SUPPLIED ACCESSORIES q w OPTIONS UT-106* DSP UNIT Provides AF DSP functions such as noise reduction and auto notch. UT-108* DTMF DECODER UNIT Provides DTMF decode function for sub band. t e r UT-118* DIGITAL UNIT Provides DV (digital) mode operation. UT-122* DIGITAL UNIT Provides P25 (digital) mode operation. y CP-12L CIGARETTE LIGHTER CABLES For operation and charging via a 12 V cigarette lighter socket. OPC-254L DC POWER CABLES For operation and charging via an external power supply. q Antenna ............................................................ 1 w AC adapter* ...................................................... 1 e USB cable ......................................................... 1 r CD .................................................................. 1 t Foot pad sheet...................................................... 1 y Cable hanger ...................................................... 1 *Not supplied with some versions. SP-10 EXTERNAL SPEAKER For all-round mobile operation. Cable length: 1.5 m; 4.9 ft OPC-1156 SEPARATION CABLE For extended separate installation. 3.5 m; 11.5 ft MB-84 REMOTE CONTROLLER BRACKET Mounts the remote controller in a convenient location. MB-65 MOUNTING BASE SPECIFICATIONS Specifications are provided in the IC-PCR1500/IC-PCR2500's Instruction manual. Mounts the controller with the MB-84. Adjustable angle and direction for optimum positioning. *: The optional units UT-106, UT-108, UT-118, UT-122 installations are described in the IC-PCR1500/IC-PCR2500's Instruction manual. ii PRECAUTIONS RWARNING! NEVER connect the receiver via the OPC-254L to an AC outlet. This may pose a fire hazard or result in an electric shock. NEVER place the receiver where normal operation of the vehicle may be hindered or where it could cause bodily injury. RWARNING! NEVER operate the receiver while driving a vehicle. Safe driving requires your full attention-- anything less may result in an accident. NEVER let objects impede the operation of the cooling fan on the rear panel. AVOID using or placing the receiver in direct sunlight or in areas with temperatures below ­10°C (+14°F) or above +60°C (+140°F). NEVER connect the receiver to a power source of more than 14 V DC. This will damage the receiver. NEVER connect the receiver to a power source using reverse polarity. This will damage the receiver. BE CAREFUL! The receiver will become hot when operating it continuously for long periods. AVOID setting the receiver in a place without adequate ventilation. Heat dissipation may be affected, and the receiver may be damaged. AVOID the use of chemical agents such as benzine or alcohol when cleaning, as they can damage the receiver's surfaces. For U.S.A. only CAUTION: Changes or modifications to this device, not expressly approved by Icom Inc., could void your authority to operate this device under FCC regulations. NEVER cut the DC power cable between the DC plug and fuse holder. If an incorrect connection is made after cutting, the receiver may be damaged. DO NOT leave the main unit powered ON and connected to a vehicle's electrical system. The main unit draws approx. 550 mA. This will eventually drain the vehicle's battery. NEVER expose the receiver to rain, snow or any liquids. The receiver may be damaged. NEVER operate or touch the receiver with wet hands. This may result in an electric shock or damage the receiver. iii ABOUT APCO PROJECT 25 This device made under license under one or more of the following US patents: #4,590,473, #4,636,791, #5,148,482, #5,185,796, #5,271,017, #5,377,229. The IMBETM voice coding technology embodied in this product is protected by intellectual property rights including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc. This voice coding Technology is licensed solely for use within this communications equipment. The user of this technology is explicitly prohibited from attempting to decompile, reverse engineer, or disassemble the object code, or in any other way convert the object code into a human-readable form. U.S. Pat. nos. #5,870,405, #5,826,222, #5,754,974, #5,701,390, #5,715,365, #5,649,050, #5,630,011, #5,581,656, #5,517,511, #5,491,772, #5,247,579, #5,226,084, #5,195,166. ITAL UNIT P25 digital mode is available when the optional UT-122 DIGis installed. iv TABLE OF CONTENTS FOREWORD .............................................................. i IMPORTANT ............................................................... i EXPLICIT DEFINITIONS ............................................ i SUPPLIED ACCESSORIES ...................................... ii SPECIFICATIONS ..................................................... ii OPTIONS ................................................................... ii PRECAUTIONS ........................................................ iii ABOUT APCO PROJECT 25 .................................... iv TABLE OF CONTENTS ............................................. v 1 CONNECTION ................................................. 1­2 Rear panel connection....................................... 1 Antenna installation .......................................... 2 2 PANEL DESCRIPTION .................................. 3­10 Front panel--controller ..................................... 3 Function display ................................................ 7 Rear panel--main unit ...................................... 9 3 SETTING A FREQUENCY ........................... 11­13 Preparation ..................................................... 11 Tuning step selection ...................................... 12 Using the tuning dial ....................................... 13 Receive mode selection ................................. 13 4 BASIC OPERATION .................................... 14­22 Receiving ........................................................ 14 Monitor function .............................................. 14 Lock function .................................................. 15 v Attenuator function .......................................... 15 NB function ..................................................... 16 AGC function .................................................. 16 AFC function ................................................... 17 VSC function ................................................... 17 IF filter selection ............................................. 18 IF shift function ............................................... 18 Duplex operation ............................................ 19 Weather channel operation (USA/CANADA versions only).............................. 20 Single band operation ..................................... 22 5 MEMORY OPERATION ............................... 23­32 General description ........................................ 23 Memory channel selection .............................. 23 Programming a memory channel ................... 24 Programming channel names ........................ 25 Copying memory contents .............................. 27 Memory clearing ............................................. 29 Memory bank setting ...................................... 30 Memory bank selection ................................... 31 Transferring bank contents ............................. 31 6 SCAN OPERATION ..................................... 33­37 Scan types ...................................................... 33 Scan start/stop ................................................ 34 Scan edges programming .............................. 35 Skip scan ........................................................ 36 Scan resume condition ................................... 37 7 PRIORITY WATCH ............................................ 38 Priority watch types ........................................ 38 Priority watch operation .................................. 38 8 POCKET BEEP AND TONE SQUELCH ..... 39­42 Pocket beep operation .................................... 39 Tone/DTCS squelch operation ........................ 41 Tone scan ....................................................... 42 9 DIGITAL MODE OPERATION ..................... 43­48 Digital mode operation .................................... 43 Pocket beep operation .................................... 43 Digital squelch operation ................................ 45 Call sign programming (for DV mode) ............... 47 ID code programming (for P25 mode) ............... 48 10 SET MODE ................................................... 49­64 General ........................................................... 49 Set mode items ............................................... 49 11 OTHER FUNCTIONS ................................... 65­68 DSP operation (Optional UT-106 is required)....... 65 DATA cloning (IC-PCR2500 control software must be installed) ... 66 Partial reset ..................................................... 67 All reset............................................................ 67 Internal audio switch........................................ 68 12 TROUBLESHOOTING ....................................... 69 13 DOC ................................................................... 70 1 2 3 4 5 6 7 8 9 10 11 12 13 14 vi 1 CONNECTION D DC power supply connection Use a 12 V DC power supply with at least 4 A capacity. Make sure the ground terminal of the DC power supply is grounded. · CONNECTING TO A DC POWER SUPPLY Connect to a 12 V DC battery. Pay attention to polarities. NEVER connect to a 24 V battery. This could damage the receiver. white Receiver Rear panel connection The antenna holder is backed with double-sided tape. Remove the protective paper when the antenna is fixed to any place. The dualwatch operation or diversity operation requires antennas connected to both [ANT1] and [ANT2]. Receiver Supplied antenna to an AC outlet OPC-254L (optional) black - NOTE: Use the terminals as shown below for the cable connections. Crimp Solder To ground Ferrite core* DC power supply 12 V R CAUTION! NEVER remove the fuseholders from the DC power cable. Or To AC adapter CP-12L (optional) Fuse (4 A) Controller D Fuse replacement To a cigarette lighter socket *: Ferrite core may not be present on all versions. Fuses (4 A) 1 CONNECTION D OPC-1156 connection q Connect the controller plug to the OPC-1156 jack. w Detach the ferrite core from the controller cable, then attach it to the OPC-1156 as shown below. · Make sure to wind the cable on the ferrite core. 1 1 Antenna installation D Antenna location To obtain maximum performance from the receiver, select a high-quality antenna and mount it in a good location. It is not necessary to use radials on a magnetic mount ("mag mount") antenna. e Connect the OPC-1156 plug to the [CONTROLLER] connector of the receiver. Receiver Ferrite core* Jack OPC-1156 Controller *: Ferrite core may not be present on all versions. 2 2 PANEL DESCRIPTION Front panel--controller The keys w to t are for the main band only. q MAIN AGC VFO/MR S.MW MHz TS Function display (pgs. 7, 8) w SET SKIP MAIN NB VFO/MR S.MW MHz TS PWR VOL COMMUNICATIONS RECEIVER iR2500 VOL DIAL SQL MONI T/T-SCAN DIAL SQL MODE SCAN ATT PRIO t r e 3 PANEL DESCRIPTION 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 q POWER KEY [PWR· ] Push and hold for 1 sec. to turn the controller power ON and OFF. (p. 11) Continue to hold this key down for 2 sec. after power ON to turn the lock function ON and OFF. (p. 15) w SET·SKIP KEY [SET·SKIP] Push to enter set mode. (p. 49) Push and hold for 1 sec. to turn the channel skip setting ON and OFF for memory/VFO skip scan operation. (p. 36) e ATTENUATOR/PRIORITY KEY [ATT·PRIO] Push to turn the ATT (Attenuator) function ON and OFF. (p. 15) Push and hold for 1 sec. to start priority watch. (p. 38) r MODE·SCAN KEY [MODE·SCAN] Push and hold for 1 sec. to enter receive mode select mode. (p. 13) · Rotate main band's [DIAL] to select the desired receive mode. t MONITOR·TONE·TONE SCAN KEY [MONI·T/T-SCAN] Push to turn the monitor function ON and OFF. (p. 14) Push and hold for 1 sec. to enter the tone function selection mode. (pgs. 34, 41, 44, 46) · Pocket beep (CTCSS), tone squelch, pocket beep (DTCS), DTCS squelch or tone function OFF can be selected in FM mode. · Pocket beep (DSQL), digital call sign squelch, pocket beep (CSQL), digital code squelch or digital squelch function OFF can be selected in DV*1 mode. · Pocket beep (NAC), digital NAC squelch, pocket beep (Selective), digital selective squelch or digital squelch function OFF can be selected in P25*2 mode. *1: The optional UT-118 is required. *2: The optional UT-122 is required. Some versions already come with the UT-122 installed. Push and hold for 1 sec. during tone function selection mode to start the tone scan. (p. 42) Push and hold for 1 sec. to start a scan. (p. 34) · Cancels a scan when pushed during scan. 4 2 PANEL DESCRIPTION The same controls for both the left and right bands are arranged symmetrically. Left band Right band PWR SET SKIP MAIN NB VFO/MR S.MW MHz TS ya u i o !0 MAIN AGC VFO/MR S.MW MHz TS yb u i o !0 VOL COMMUNICATIONS RECEIVER iR2500 VOL DIAL SQL MONI T/T-SCAN DIAL SQL MODE SCAN ATT PRIO !1 !1 5 PANEL DESCRIPTION 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ya MAIN·AGC KEY [MAIN·AGC] Push to select the left band as main band. (p. 11) Push and hold for 1 sec. to turn the AGC (Automatic Gain Control) function ON and OFF. (p. 16) yb MAIN·NB KEY [MAIN·NB] Push to select the right band as main band. (p. 11) Push and hold for 1 sec. to turn the NB (Noise Blanker) function ON and OFF. (p. 16) uVFO/MEMORY·MEMORY WRITE KEY [VFO/MR·S.MW] Push to select from VFO, memory and weather channel* modes. (pgs. 11, 20, 23) Push and hold for 1 sec. to enter select memory write mode for memory channel programming. (pgs. 24, 25, 35) i MHz TUNING·TUNING STEP [MHz·TS] Push to select from band selection, 1 MHz or 10 MHz tuning. (p. 13) Push and hold for 1 sec. to enter tuning step select mode. (p. 12) · Rotate [DIAL] to select the desired tuning step. *Weather channels available for USA/CANADA versions only. o VOLUME CONTROL [VOL] (p. 14) Adjusts the audio level for left and right band. !0 TUNING DIAL [DIAL] Selects the operating frequency (p. 13), memory channel (p. 23), the setting of the set mode item and the scanning direction (p. 34) for left and right band. !1 SQUELCH CONTROL [SQL] Varies the squelch level for left and right band. (p. 14) 6 2 PANEL DESCRIPTION Function display Left band q w e r q w Right band t !4 !3 !2 !1 !0 o i u *Display indicators are arranged identically for both the left and right bands. t y !4 !3 !2 !1 !0 o i u y q MAIN INDICATOR (p. 11) Indicates the main band for function control. w RECEIVE MODE INDICATORS FOR ANALOG Shows the selected receive mode. · SSB (LSB/USB), CW, AM and FM (FM/WFM) are available. r AUTO POWER-OFF INDICATOR (p. 52) Appears while the auto power OFF function is activated. t FREQUENCY READOUT Shows the operating frequency, channel names, set mode contents, etc. · Frequency decimal point blinks while scanning. (p. 34) e RECEIVE MODE INDICATOR FOR DIGITAL Appears while the digital mode is selected. · The optional UT-118 for DV mode or UT-122 for P25 mode is required. Some versions come with the UT-122 installed. y MEMORY CHANNEL NUMBER INDICATORS Shows the selected memory channel number. (p. 11) Shows the selected bank initial. (p. 31) "L" appears when the lock function is activated. (p. 15) 7 PANEL DESCRIPTION 2 u SKIP INDICATORS (p. 36) "~" appears when the displayed memory channel is specified as a skip channel. "P~" appears when the displayed frequency is specified as a program skip frequency. i MEMORY INDICATOR (pgs. 11, 23) Appears when memory mode is selected. o VSC INDICATOR (p. 17) Appears when the VSC function is in use. !0 S-METER INDICATORS Shows the relative signal strength while receiving signals. (p. 14) !1 TONE INDICATORS During FM mode operation: " " appears while the tone squelch function is in use. (p. 41) " " appears while the DTCS squelch function is in use. (p. 41) During DV*1 (Digital) mode operation: " " appears while the digital call sign squelch function is in use. (p. 45) " " appears while the digital code squelch function is in use. (p. 45) During P25*2 (Digital) mode operation: " " appears while the digital NAC squelch function is in use. (p. 45) " " appears while the digital selective squelch function is in use. (p. 45) "S" appears with the " " or " " indicator while the pocket beep function is in use. (pgs. 39, 43) *1: The optional UT-118 is required. *2: The optional UT-122 is required. Some versions come with the UT-122 installed. 2 !2 PRIORITY INDICATOR (p. 38) Appears while priority watch is activated; blinks while priority watch is paused. !3 ATT INDICATOR (p. 15) Appears when the ATT function is in use. !4 BUSY INDICATOR Appears when a signal is being received or the squelch is open. (p. 14) Blinks while the monitor function is in use. (p. 14) 8 2 PANEL DESCRIPTION Rear panel--main unit Left band q w e Rear r q Right band Power switch Speaker Top DC IN ANT 1 GND PACKET 1 DATA PACKET 2 USB EXT SP ANT 2 i u PACKET jack connection AUDIO GND 2-conductor 3.5 (d) mm (1/8)/100 k t Front y EXT SP jack connection AUDIO GND 2-conductor 3.5 (d) mm (1/8)/8 9 PANEL DESCRIPTION q ANTENNA CONNECTORS [ANT] Connect a 50 antenna with a BNC connector and a 50 coaxial cable. [ANT1] for left band, [ANT2] for right band. Two antennas must be connected to [ANT1] and [ANT2] during dualwatch operation or diversity operation. Diversity operation requires two antennas of the same performance in suitable places. Ask your antenna dealer for installation details. w DATA JACK [DATA] Connect to a PC via an RS-232 cable (D-sub 9 pin) for DV*1 mode data communication in RS-232 format. *1 : The optional UT-118 is required. 2 r USB CONNECTOR [USB] Connects to a PC via a supplied USB cable. This connector is only used for control software operation. · No connection is necessary when the IC-R2500's controller is in use. 2 CAUTION: NEVER insert any other object than a USB cable, such as a metallic object, otherwise the Main unit may be damaged. t EXTERNAL SPEAKER JACK [EXT SP] Connect an 8 external speaker. · Audio output power is more than 0.5 W. y CONTROLLER [CONTROLLER] Connects to a controller via an extension cable. This connector is only used for IC-R2500's controller operation. · No connection is necessary when the control software is in use. Pin 2 (RxD), Pin 5 (GND) to the [DATA] jack GND RxD 2.5(d) mm 5 1 CAUTION: NEVER insert any other object than the controller cable, such as a metallic object, otherwise the Main unit may be damaged. u POWER JACK [DC IN] Accepts 12 V DC ±15% via the supplied DC power cable. i GROUND TERMINAL [GND] Connect this terminal to a ground. Less than 10(d) mm 9 6 RS-232 (DB-9 female) e PACKET JACKS [PACKET] Connect a TNC (Terminal Node Controller), etc. for data communications. The receiver can support 9600 bps packet communication (AFSK). 10 3 [PWR· ] SETTING A FREQUENCY Preparation D Turning power ON/OFF D VFO and memory modes The receiver has 2 basic operating modes: VFO mode and memory mode. Select VFO mode first to set an operating frequency. [VFO/MR·S.MW] Push [PWR· ] for 1 sec. to turn power ON and OFF. D MAIN band The IC-R2500 can receive signals on both the left and right bands simultaneously. [MAIN·AGC] [MAIN·NB] "!" indicator appears when memory mode is selected Push the desired band's [MAIN·AGC] or [MAIN·NB] to select the main band. · "Q" indicates the main band. Push the desired band's [VFO/MR·S.MW] to select VFO mode. Push [VFO/MR·S.MW] again to select memory mode. · "!" indicator appears when memory mode is selected. 11 SETTING A FREQUENCY 3 Tuning step selection When using the tuning dial to change the frequency, or when a scan function is activated, the frequency changes in increments determined by the set tuning step. This can be changed if desired. The following tuning step are available. · 0.01 kHz (10 Hz) · 0.1 kHz (100 Hz) · 2.5 kHz · 8.33 kHz · 12.5 kHz · 25 kHz · 100 kHz · 200 kHz · 0.02 kHz (20 Hz) · 0.5 kHz (500 Hz) · 5 kHz · 9 kHz · 15 kHz · 30 kHz · 125 kHz · 500 kHz · 0.05 kHz (50 Hz) · 1 kHz · 6.25 kHz · 10 kHz · 20 kHz · 50 kHz · 150 kHz · 1000 kHz (1 MHz) [DIAL] eRotate the same band's [DIAL] to select the desired tuning step. 3 rPush [MHz·TS] to exit tuning step select mode. · Or push any other keys for the same band or any of the shared keys below the display to exit tuning step select mode. q Push the desired band's [MAIN] to select the main band. · Push the same band's [VFO/MR·S.MW] to select VFO mode, if necessary. wPush and hold [MHz·TS] for 1 sec. to enter tuning step select mode. [MHz·TS] 12 3 SETTING A FREQUENCY Using the tuning dial q Rotate the desired band's [DIAL] to set the frequency. · If VFO mode is not selected, push the same band's [VFO/MR·S.MW] to select VFO mode. · The frequency changes in the selected tuning steps. (p. 12) Push [VFO/MR·S.MW] Rotate [DIAL] Receive mode selection Receive modes are determined by the physical properties of the radio signals. The receiver has 6 receive modes: USB LSB, CW, AM, WFM and FM modes. The mode selection is stored independently in each memory channel. Additionally, IC-R2500 has a DV or P25 mode when the optional UT-118 or UT-122 units are installed, respectively. In DV or P25 mode, the right band can select AM, FM and WFM mode only. Typically, AM mode is used for the AM broadcast stations (0.495­1.620 MHz), air band (118­135.995 MHz), and shortwave broadcasts. WFM is used for FM broadcast stations (76­107.9 MHz). WFM mode can be selected on 1300 MHz band or below. qPush [MODE·SCAN] to enter receive mode select mode. wTo change the frequency band or tune in 1 MHz (10 MHz) steps, push [MHz·TS], then rotate the band's [DIAL]. While the band selection mode is selected, the digits below 100 kHz disappear. [MODE·SCAN] [DIAL] w Rotate main band's [DIAL] to select the desired mode. While 10 MHz tuning step is selected, the 10 MHz digit blinks. While 1 MHz tuning step is selected, the 1 MHz digit blinks. ePush [MHz·TS] to return to the normal display. 13 ePush any key for main band to exit receive mode select mode. BASIC OPERATION Receiving q Set the audio level for the main band. Push the desired band's [MAIN]. Push [MONI·T/T-SCAN] to open the squelch. Rotate the main band's [VOL] to adjust the audio level. Push [MONI·T/T-SCAN] to close the squelch. w Set the squelch level. Rotate the main band's [SQL] fully counterclockwise in advance, then rotate [SQL] clockwise until the noise just disappears. eSet the operating frequency in the main band. (pgs. 11­13) · When interference due to strong signals is received, push [ATT·PRIO] to turn the attenuator function ON. (p. 15) 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Monitor function This function is used to listen to weak signals without disturbing the squelch setting or to open the squelch manually even when mute functions such as the tone squelch are in use. [MONI·T/T-SCAN] rWhen a signal is received on the set frequency, squelch opens and the receiver emits audio. · "BUSY" appears and the S-meter shows the relative signal strength for the received signal. After pushing [MAIN] to select the desired band (left or right) as the main band, push [MONI·T/T-SCAN] for 1 sec. to open the squelch. · "BUSY" blinks. · Push [MONI·T/T-SCAN] again to cancel the function. Appears when receiving a signal. 14 4 BASIC OPERATION Lock function To prevent accidental frequency changes and unintentional function access, use the lock function. Continue to hold [PWR· ] down for 2 sec. after power ON to turn the lock function ON and OFF. · [MONI·T/T-SCAN] (monitor function only), [VOL], [SQL], [MAIN·AGC] (main band selection only) and [MAIN·NB] (main band selection only) can be used while the lock function is in use. [PWR· ] Attenuator function The attenuator prevents a desired signal from being distorted when very strong signals are near the desired frequency or when very strong RF fields, such as from a broadcasting station, are near your location. The attenuator reduces signal strength by about 20 dB and this function can be activated on 1300 MHz or below. Push [ATT·PRIO] momentarily to toggle the attenuator function ON and OFF. · Push [MAIN] to select the desired band (left or right) as the main band in advance. · "ATT" appears when the attenuator function is in use. [ATT·PRIO] 2 "L"s appear while the lock function is activated. Appears 15 BASIC OPERATION 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NB function The NB (noise blanker) function removes pulse-type noise when SSB, CW or AM mode is selected. After pushing [MAIN] to select the desired band (left or right) as the main band, push and hold [MAIN·NB] for 1 sec. to toggle the NB function ON and OFF. · "nb-On" or "nb-OF" appears for a moment when the NB function is turned ON or OFF, respectively. [MAIN·NB] AGC function The AGC (Automatic Gain Control) function controls receiver gain to produce a constant audio output level even when the received signal strength varies from fading, etc. A slow-response AGC function is selectable for SSB, CW or AM mode. After pushing [MAIN] to select the desired band (left or right) as the main band, push and hold [MAIN·AGC] for 1 sec. to toggle the AGC function Slow and Fast. · "AGC-S" or "AGC-F" appears for a moment when the AGC function is selected Slow or Fast, respectively. [MAIN·AGC] While in FM or WFM mode, the AGC function is fixed as Fast and AGC Slow cannot be selected. 16 4 BASIC OPERATION AFC function [ VSC function [ The AFC (Automatic Frequency Control) function tunes the displayed frequency automatically when an off-center frequency is received. It activates in FM mode and only when the selected IF filter is 6 kHz or 15 kHz. q Push the desired band's [MAIN] to select the main band. w Select FM mode. e Push [SET·SKIP] to enter set mode. r Push [SET·SKIP] or [ATT·PRIO] several times until "AFC" appears. [SET·SKIP] [ATT·PRIO] [DIAL] The VSC (Voice Squelch Control) function opens the squelch only when receiving a modulated signal. This function is very useful while scanning, the VSC pauses only when modulated signals are received. Scanning continues when unmodulated or beat signals are received. q Push the desired band's [MAIN] to select the main band. w Push [SET·SKIP] to enter set mode. e Push [SET·SKIP] or [ATT·PRIO] several times until "VSC" appears. [SET·SKIP] [ATT·PRIO] [DIAL] t Rotate the main band's [DIAL] to toggle the AFC function ON and OFF. r Rotate the main band's [DIAL] to toggle the VSC function ON and OFF. y Push any key for the main band to exit set mode. t Push any key for the main band to exit set mode. 17 BASIC OPERATION 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IF filter selection [ IF shift function [ The receiver has 2 to 4 IF passband filter widths for each mode. Selectable passband widths are 3, 6, 15, 50 and 230 (depending on the selected mode). · Selectable passband width for each mode. SSB mode : 3 (2.8 kHz) or 6 kHz CW mode : 3 (2.8 kHz) or 6 kHz AM mode : 3 (2.8 kHz), 6 kHz, 15 kHz or 50 kHz WFM mode: 50 kHz or 230 kHz FM mode : 6 kHz, 15 kHz or 50 kHz q Push the desired band's [MAIN] to select the main band. w Push [SET·SKIP] to enter set mode. e Push [SET·SKIP] or [ATT·PRIO] several times until "VSC" appears. [SET·SKIP] [ATT·PRIO] [DIAL] The IF shift function electronically changes the passband frequency of the IF (Intermediate frequency) cutting out higher or lower frequency components of the IF to reject interference. This function is available when the receive mode is SSB or CW mode, and shifts the IF frequency up to ±25 steps (in 1 step: 50 Hz). q After pushing [MAIN] to select the desired band (left or right) as the main band, push [SET·SKIP] to enter set mode. w Push [SET·SKIP] or [ATT·PRIO] several times until "SFt" appears. [SET·SKIP] [ATT·PRIO] [DIAL] e Rotate the main band's [DIAL] to set the shifting direction and frequency range. r Rotate the main band's [DIAL] to select the desired IF passband width. Center position (default) Lowest Highest t Push any key for the main band to exit set mode. r Push any key for the main band to exit set mode. 18 4 BASIC OPERATION Duplex operation Duplex communication uses two different frequencies for transmitting and receiving. Generally, duplex is used in communication through a repeater, some utility communications, etc. During duplex operation, the transmit station frequency is shifted from the receive station frequency by the offset frequency. Repeater information (offset frequency and shift direction) can be programmed into memory channels. (p. 24) tPush [SET·SKIP] once to advance to the offset frequency setting item. yRotate the main band's [DIAL] to set the desired offset frequency within 0.000­1000.000 MHz range. · The tuning step, selected in VFO mode, is used for setting. · Push [MHz·TS] then rotate the main band's [DIAL] to change the frequency in 10 MHz steps, or push again then rotate the main band's [DIAL] to change the frequency in 1 MHz steps. (Each push toggles 1MHz, 10 MHz or selected tuning steps.) D Setting [ qPush the desired band's [MAIN] to select the main band. w Push [SET·SKIP] to enter set mode. ePush [SET·SKIP] or [ATT·PRIO] several times until the duplex direction setting item "OFF dP," "DUP­ dP" or "DUP+ dP" appears. [SET·SKIP] [ATT·PRIO] [DIAL] uPush any key for main band to exit set mode. rRotate the main band's [DIAL] to select the duplex direction, "DUP­ dP" or "DUP+ dP." 19 BASIC OPERATION 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Weather channel operation D Operation q Set the receive station frequency (repeater output frequency). wPush [MONI·T/T-SCAN] to monitor the transmit station frequency (repeater input frequency) directly. [MONI·T/T-SCAN] (USA/CANADA versions only) D Weather channel selection q Push [VFO/MR·S.MW] to select memory mode in the desired band (left or right). w Push [MHz·TS] to enter memory type selection mode. [VFO/MR·S.MW] [MHz·TS] [DIAL] Frequency shifts the offset frequency Weather channel group indicaiton e Rotate [DIAL] to select the weather channel group. r Push any key for main band or any of the shared keys below the display to set the channel indication. · Channel number appears. t Rotate [DIAL] to select the desired weather channel. y To return to regular memory mode, repeat steps w to r and select "bAnk --" at step e. 20 4 BASIC OPERATION D Weather alert function NOAA broadcast stations transmit weather alert tones before important weather announcements. When the weather alert function is turned ON, the selected weather channel is monitored each 5 sec. for the announcement. When the alert signal is detected, the "ALt" and the WX channel are displayed alternately and sounds a beep tone until the receiver controls are manipulated. The previously selected weather channel is checked periodically during standby or while scanning. q Select the desired weather channel. w Turn the weather alert function ON in set mode. · Push [MAIN] to select the desired band (left or right) as the main band in advance. r When the alert is detected, a beep sounds and the following indication will be displayed. Shows above indications alternately. t Turn the weather alert function OFF in set mode. NOTE: While receiving a signal (on a frequency other than the weather alert ON frequency), the receiving signal or audio will be interrupted momentarily every 5 sec. (approx.) in case the alert function is turned ON. This is caused by the WX alert function. To eliminate the interruptions, set the weather alert item OFF in set mode. Push [SET·SKIP] to enter set mode. Push [SET·SKIP] or [ATT·PRIO] to select the weather alert item, then rotate the main band's [DIAL] to set ON. Push any key for main band to exit set mode. e Select the desired stand-by condition. · Select VFO or memory channel. · Scan or priority watch operation can also be selected. 21 BASIC OPERATION 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Single band operation D Single band/Dualwatch operation Dualwatch operation monitors two frequencies simultaneously. The IC-R2500 has two independent receiver circuits: left band, and right band (available frequencies, operating mode and functions are different depending on bands). D Diversity operation The diversity receiving compares the receiving signal strength from two different antennas, ANT1 and ANT2, and automatically selects the strongest signal. This feature is useful when you are listening in a moving vehicle or the transmitting station itself is moving. Diversity receiving is available from 50 MHz to 1300 MHz on FM, P25 and DV modes only. qTurn the sub band OFF to select single band operation as described at left. wRotate right band's [DIAL] to turn the diversity function ON or OFF. Single band operation is useful when only one frequency is being watched. The right band can be inhibited. q Select the left band as the main band. Push [MAIN·AGC] once to select left band, if necessary. w Push [SET·SKIP] to enter set mode. ePush [SET·SKIP] or [ATT·PRIO] several times to select "SUb" item. rRotate the left band's [DIAL] to turn the sub band ON for dualwatch or OFF for single band operation. [MAIN·AGC] [SET·SKIP] [DIAL] [DIAL] [ATT·PRIO] " " " indicator appears while [ANT1] is selected, " indicator appears while [ANT2] is selected. t Push any key for main band to exit set mode. When the dualwatch operation is in use, IC-R2500 must be connected to two antennas. ([ANT1] and [ANT2]) · With the squelch open in FM mode while receiving a weak signal, diversity receiving does not work properly. · AGC is disabled during diversity receiving. 22 5 MEMORY OPERATION Memory channel selection q Push the desired band's [VFO/MR·S.MW] once or twice to select memory mode. · "M" indicator appears. [VFO/MR·S.MW] General description The receiver has 1100 memory channels including 100 scan edge memory channels (50 pairs) for storage of often-used frequencies. And a total of 21 memory banks, A to H, J to R, T, U, W and Y are available for storing groups of frequencies, etc. Up to 100 channels can be assigned to a bank. D Memory channel contents The following information can be programmed into memory channels: · Operating frequency (p. 13) · Receive mode (p. 13) · Tuning step (p. 12) · Attenuator ON/OFF (p. 15) · IF filter selection (p. 18) · Duplex direction (DUP+ or DUP­) with an offset frequency (p. 19) · Squelch control system ON/OFF and its frequency or code (pgs. 39, 41, 43, 45) · Scan skip information (p. 36), etc. "!" indicator appears when memory mode is selected w Rotate the same band's [DIAL] to select the desired memory channel. · Programmed memory channels only can be selected. If memory banks or weather channels* mode appears at step q, push [MHz·TS] and rotate [DIAL] to select "bAnk --," then push any keys for the main band or any of the shared keys below the display to return to channel selection. *Available for USA/CANADA versions only. 23 MEMORY OPERATION 5 Programming a memory channel VFO settings, including the set mode contents such as subaudible tone frequency, offset and scan skip information can be programmed into a memory channel. qSet the desired frequency in the desired band (left or right). Push the desired band's [VFO/MR·S.MW] once or twice to select VFO mode. Set the frequency using the same band's [DIAL]. Set other data (e.g. tone frequency, duplex information, etc.) if required. wPush and hold the same band's [VFO/MR·S.MW] for 1 sec. to enter select memory write mode. · "!" indicator and the memory channel number blink. eRotate the same band's [DIAL] to select the memory channel to be programmed. · Memory channels not yet programmed are blank. r Push and hold [VFO/MR·S.MW] for 1 sec. to program. · 3 beeps sound · Memory channel number automatically increases when continuing to push [VFO/MR·S.MW] after programming. 5 CONVENIENT Memory programming can be made quicker by copying memory information to different memory channels (p. 27). [EXAMPLE]: Programming 145.800 MHz into memory channel 20 (blank channel). Push VFO/MR S.MW Rotate for setting frequency, etc. Push Beep VFO/MR S.MW for 1 sec. Beep Rotate Push VFO/MR S.MW for 1 sec. and continue to push Release VFO/MR S.MW Beep Beep Beep Beep 24 5 MEMORY OPERATION Programming channel names Each memory channel can be programmed with an alphanumeric channel name for easy recognition and can be indicated independently by channel. Names can be a maximum of 6 characters-- see the table on next page for available characters. q Select the desired memory channel to be programmed. Push [VFO/MR·S.MW] to select memory mode, then rotate the same band's [DIAL] to select the desired memory channel. wPush and hold [VFO/MR·S.MW] for 1 sec. to enter select memory write mode. · "!" indicator and the memory channel number blink. e Push [SET·SKIP] several times to select the memory name programming condition, "m nAmE." · Frequency readouts disappear and a cursor blinks. r Rotate the same band's [DIAL] to select the desired character. · The selected character blinks. t Push [ATT·PRIO] to move the cursor to the right. · Repeat pushing [ATT·PRIO] to return to the first digit. y Repeat steps r and t until the desired channel name is displayed. u Push and hold [VFO/MR·S.MW] for 1 sec. to program the name and exit select memory write mode.