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INSTRUCTION MANUAL
COMMUNICATION RECEIVER
iR2500
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 undesired operation.
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FOREWORD IMPORTANT Thank you for purchasing this Icom receiver. The IC-R2500 READ ALL INSTRUCTIONS carefully and completely COMMUNICATIONS RECEIVER is designed and built with Icom’s before using the receiver. state of the art technology and craftsmanship. With proper SAVE THIS INSTRUCTION MANUAL— This in- care, this receiver should provide you with years of trouble- struction manual contains important operating instructions for free operation. the IC-R2500. We want to take a couple of moments of
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SUPPLIED ACCESSORIES OPTIONS UT-106* DSP UNIT Provides AF DSP functions such as noise reduction and auto qw notch. UT-108* DTMF DECODER UNIT Provides DTMF decode function for sub band. UT-118* DIGITAL UNIT t Provides DV (digital) mode operation. UT-122* DIGITAL UNIT e r Provides P25 (digital) mode operation. CP-12L CIGARETTE LIGHTER CABLES y 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
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PRECAUTIONS NEVER place the receiver where normal operation of the RWARNING! NEVER connect the receiver via the vehicle may be hindered or where it could cause bodily injury. OPC-254L to an AC outlet. This may pose a fire hazard or re- sult in an electric shock. NEVER let objects impede the operation of the cooling fan on the rear panel. RWARNING! NEVER operate the receiver while dri- ving a vehicle. Safe driving requires your full attention— any- AVOID using or placing the receiver in direct sun
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ABOUT APCO PROJECT 25 This device made under license under one or more of the fol- lowing US patents: #4,590,473, #4,636,791, #5,148,482, #5,185,796, #5,271,017, #5,377,229. The IMBE™ 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 tech- nology is explicitly
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TABLE OF CONTENTS FOREWORD .............................................................. i ■ Attenuator function .......................................... 15 IMPORTANT ............................................................... i ■ NB function ..................................................... 16 EXPLICIT DEFINITIONS ............................................ i ■ AGC function .................................................. 16 SUPPLIED ACCESSORIES ...................................
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1 2 7 PRIORITY WATCH ............................................ 38 3 ■ Priority watch types ........................................ 38 ■ Priority watch operation .................................. 38 4 8 POCKET BEEP AND TONE SQUELCH ..... 39–42 5 ■ Pocket beep operation .................................... 39 ■ Tone/DTCS squelch operation ........................ 41 6 ■ Tone scan ....................................................... 42 7 9 DIGITAL MODE OPERATION ..................... 43–48
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CONNECTION 1 D DC power supply connection ■ Rear panel 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 The antenna holder is backed with double-sided grounded. tape. Remove the protective paper when the antenna is fixed to any place. • CONNECTING TO A DC POWER SUPPLY Connect to a 12 V DC Receiver battery. Pay attention to polarities. NEVER The dualwatch operation or diversity connect to a 24 V bat- operation require
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1 CONNECTION D D OPC-1156 connection ■ Antenna installation 1 q Connect the controller plug to the OPC-1156 jack. w Detach the ferrite core from the controller cable, then at- D Antenna location tach it to the OPC-1156 as shown below. To obtain maximum performance from the receiver, select a • Make sure to wind the cable on the ferrite core. high-quality antenna and mount it in a good location. It is not e Connect the OPC-1156 plug to the [CONTROLLER] con- necessary to use radials on a magnetic
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PANEL DESCRIPTION 2 ■ Front panel—controller The keys w to t are for the main band only. Function display (pgs. 7, 8) qw SET PWR MAIN MAIN AGC SKIP NB VFO/MR VFO/MR S.MW S.MW MHz MHz TS TS VOL VOL COMMUNICATIONS RECEIVER iR2500 DIAL DIAL SQL SQL MONI MODE ATT T/T-SCAN SCAN PRIO t r e 3
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2 PANEL DESCRIPTION 1 2 3 qPOWER KEY [PWR• ] t MONITOR•TONE•TONE SCAN KEY ➥ Push and hold for 1 sec. to turn the controller power ON [MONI•T/T-SCAN] 4 and OFF. (p. 11) ➥ Push to turn the monitor function ON and OFF. (p. 14) 5 ➥ Continue to hold this key down for 2 sec. after power ➥ Push and hold for 1 sec. to enter the tone function se- ON to turn the lock function ON and OFF. (p. 15) lection mode. (pgs. 34, 41, 44, 46) 6 • Pocket beep (CTCSS), tone squelch, pocket beep (DTCS), wSET•SKIP KEY [S
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2 PANEL DESCRIPTION The same controls for both the left and right bands are arranged symmetrically. Left band Right band PWR SET MAIN MAIN AGC SKIP NB ya yb VFO/MR VFO/MR S.MW S.MW u u MHz MHz TS TS i i VOL VOL COMMUNICATIONS RECEIVER iR2500 o o DIAL DIAL SQL SQL MONI MODE ATT ! ! T/T-SCAN SCAN PRIO ! ! 5 0 1 1 0
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2 PANEL DESCRIPTION 1 2 ya MAIN•AGC KEY [MAIN•AGC] oVOLUME CONTROL [VOL] (p. 14) ➥ Push to select the left band as main band. (p. 11) Adjusts the audio level for left and right band. 3 ➥ Push and hold for 1 sec. to turn the AGC (Automatic !TUNING DIAL [DIAL] 4 Gain Control) function ON and OFF. (p. 16) Selects the operating frequency (p. 13), memory channel yb MAIN•NB KEY [MAIN•NB] (p. 23), the setting of the set mode item and the scanning 5 ➥ Push to select the right band as main band. (p. 11)
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2 PANEL DESCRIPTION ■ Function display qewq r w Left band Right band t t ! ! ! ! !o! iuoyu ! i y ! *Display indicators are arranged identically for both ! the left and right bands. ! qMAIN INDICATOR (p. 11) rAUTO POWER-OFF INDICATOR (p. 52) Indicates the main band for function control. Appears while the auto power OFF function is activated. wRECEIVE MODE INDICATORS FOR ANALOG tFREQUENCY READOUT Shows the selected receive mode. Shows the operating frequency, channel names, set mode • SSB (LSB/USB
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2 PANEL DESCRIPTION 2 uSKIP INDICATORS (p. 36) 2 ➥ During P25* (Digital) mode operation: ➥ “~” appears when the displayed memory channel is ● ●“” appears while the digital NAC squelch function is specified as a skip channel. in use. (p. 45) ➥ “P~” appears when the displayed frequency is speci- ● ●“” appears while the digital selective squelch func- fied as a program skip frequency. tion is in use. (p. 45) ➥ “S” appears with the “ ” or “ ” indicator while the iMEMORY INDICATOR (pgs. 11, 23) pocket
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2 PANEL DESCRIPTION ■ Rear panel—main unit qw e r q Speaker Left band Rear Right band Power switch Top DC IN PACKET 1 PACKET 2 ANT 1 ANT 2 USB EXT SP DATA GND t i Front uy PACKET jack connection EXT SP jack connection AUDIO AUDIO GND GND 1 1 2-conductor 3.5 (d) mm ( ⁄8˝)/8 Ω 2-conductor 3.5 (d) mm ( ⁄8˝)/100 k Ω 9
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2 PANEL DESCRIPTION qANTENNA CONNECTORS [ANT] rUSB CONNECTOR [USB] Connect a 50 Ω antenna with a BNC connector and a Connects to a PC via a supplied USB cable. This connec- 2 50 Ω coaxial cable. tor is only used for control software operation. • No connection is necessary when the IC-R2500’s controller is in [ANT1] for left band, [ANT2] for right band. use. Two antennas must be connected to [ANT1] and [ANT2] CAUTION: NEVER insert any other object than a USB during dualwatch operation or diversit
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SETTING A FREQUENCY 3 ■ Preparation D Turning power ON/OFF D VFO and memory modes The receiver has 2 basic operating modes: VFO mode and [PWR• ] memory mode. Select VFO mode first to set an operating fre- quency. [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 [VFO/MR•S.MW] to select
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3 SETTING A FREQUENCY ■ Tuning step selection eRotate the same band’s [DIAL] to select the desired tun- When using the tuning dial to change the frequency, or when ing step. a scan function is activated, the frequency changes in incre- 3 ments determined by the set tuning step. This can be changed if desired. The following tuning step are available. • 0.01 kHz (10 Hz) • 0.02 kHz (20 Hz) • 0.05 kHz (50 Hz) [DIAL] • 0.1 kHz (100 Hz) • 0.5 kHz (500 Hz) • 1 kHz rPush [MHz•TS] to exit tuning step se
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3 SETTING A FREQUENCY ■ Using the tuning dial ■ Receive mode selection Receive modes are determined by the physical properties of qRotate the desired band’s [DIAL] to set the frequency. the radio signals. The receiver has 6 receive modes: USB •If VFO mode is not selected, push the same band’s LSB, CW, AM, WFM and FM modes. The mode selection is [VFO/MR•S.MW] to select VFO mode. stored independently in each memory channel. • The frequency changes in the selected tuning steps. (p. 12) Additionall
