INSTRUCTION MANUAL COMMUNICATIONS RECEIVER iR10 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. IMPORTANT READ ALL INSTRUCTIONS CAREFULLY before attempting to operate the receiver. CAUTIONS RWARNING! NEVER connect the receiver to an AC outlet. This may pose a fire hazard or result in an electric shock. SAVE THIS INSTRUCTION MANUAL -- This instruction manual contains important safety and operating instructions for the IC-R10. RWARNING! NEVER EXPLICIT DEFINITIONS The following explicit definitions apply to this manual. DEFINITION Personal injury, fire hazard or electric shock RWARNING may occur. CAUTION NOTE Equipment damage may occur. If disregarded, inconvenience only. No risk of personal injury, fire or electric shock. WORD operate the receiver with a headset or other audio accessories at high volume levels. Hearing experts advise against continuous high volume operation. If you experience a ringing in your ears, reduce the volume level or discontinue use. NEVER connect the receiver to a power source of more than 16 V DC such as a 24 V battery. This connection will ruin the receiver. NEVER cut the DC power cable between the DC plug and fuse holder. If an incorrect connection is made after cutting, the receiver might be damaged. NEVER expose the receiver to rain, snow or any liquids. DO NOT connect the receiver to a power source using reverse polarity. This connection will not only blow fuses but also may damage the receiver. Versions of the IC-R10 which display the "CE" symbol on the serial number seal, comply with the ETSI specification prETS300 684 (EMC product standard for Commercially Available Amateur Radio Equipment). i UNPACKING DO NOT use or place the receiver in areas with temperatures below ­10°C (+14°F) or above +50°C (+122°F) or, in areas subject to direct sunlight, such as the dashboard. Accessories included with the receiver: Qty. 1q Antenna............................................................................1 1w Handstrap.........................................................................1 1e Belt clip (with 2 screws)....................................................1 41r Wall charger*....................................................................1 1t Ni-Cd batteries .................................................................4 * Not supplied with some versions. AVOID placing the receiver in excessively dusty environments. AVOID the use of chemical agents such as benzine or alcohol when cleaning, as they damage the receiver surfaces. Even when the receiver power is OFF, a slight current still flows in the circuits. Remove cell batteries from the receiver when not using it for a long time. Otherwise, the installed batteries will become exhausted. For U.S.A. only Caution: Changes or modifications to this receiver, not expressly approved by Icom Inc., could void your authority to operate this receiver under FCC regulations. q w e t r ii TABLE OF CONTENTS IMPORTANT ..................................................................................... i EXPLICIT DEFINITIONS .................................................................. i CAUTIONS ....................................................................................... i UNPACKING .................................................................................... ii TABLE OF CONTENTS .................................................................. iii OPERATING THEORY ................................................................... iv OPERATING NOTES ...................................................................... iv 1 PANEL DESCRIPTION ......................................................... 1 ­ 6 I Front and side panels ............................................................................ 1 I Top panel ............................................................................................... 2 I Function display ..................................................................................... 3 I Keypad .................................................................................................. 5 4 MEMORY MODE .............................................................. 23 ­ 34 I General ................................................................................................ 23 I Selecting memory mode ...................................................................... 23 I Setting a bank and memory channel ................................................... 24 I Programming a memory channel--1 ................................................... 25 I Programming a memory channel--2 ................................................... 26 I Programming a memory channel--3 ................................................... 27 I Programming example 1 ..................................................................... 29 I Programming example 2 ..................................................................... 30 I Programming example 3 ..................................................................... 31 I Memory copy ....................................................................................... 33 I Copying example 1 .............................................................................. 34 I Copying example 2 .............................................................................. 34 2 Ni-Cd BATTERIES AND ACCESSORIES ............................ 7 ­ 9 I Charging Ni-Cd batteries ....................................................................... 7 I Charging precautions ............................................................................ 7 I About Ni-Cd batteries ............................................................................ 7 I Battery installation ................................................................................. 8 I Charging connections ............................................................................ 8 I Accessory attachment ........................................................................... 9 5 SCANNING OPERATION ................................................. 35­ 46 I General ............................................................................................... 35 I Before scanning ................................................................................... 37 I Full scan .............................................................................................. 39 I Memory scan ....................................................................................... 39 I Program scan ...................................................................................... 40 I Auto memory write scan ...................................................................... 41 I BANK scan .......................................................................................... 43 I Mode select scan ................................................................................. 44 I Skip function ........................................................................................ 45 I SIGNAVI function ................................................................................. 46 3 BASIC OPERATION ......................................................... 10 ­ 22 I General ................................................................................................ 10 I Selecting VFO mode ........................................................................... 10 I Selecting a receive mode .................................................................... 12 I Selecting a tuning step ........................................................................ 13 I Tuning a frequency (via the keypad) ................................................... 14 I Tuning a frequency (via the [DIAL]) ..................................................... 15 I Dial select steps .................................................................................. 16 I Band scope function ............................................................................ 17 I Listening example 1 ............................................................................. 19 I Listening example 2 ............................................................................. 21 6 PRIORITY WATCH ........................................................... 47 ­ 49 I General ............................................................................................... 47 7 EASY MODE ............................................................................ 50 I General ................................................................................................ 50 I EASY mode operation ........................................................................ 50 8 EDIT FUNCTION .............................................................. 51 ­ 58 iii TABLE OF CONTENTS I General ................................................................................................ 51 I Memory channel edit ........................................................................... 51 I Program scan channel edit .................................................................. 55 I EASY mode channel edit ..................................................................... 55 I Program scan or EASY mode channel edit ......................................... 57 OPERATING THEORY Electromagnetic radiation which has frequencies of 20,000 Hz (20 kHz*) and above is called radio frequency (RF) energy because it is useful in radio transmissions. The IC-R10 receives RF energy from 0.5 MHz to 1300 MHz* and converts it into audio frequency (AF) energy which in turn actuates a loudspeaker to create sound waves. AF energy is in the range of 20 to 20,000 Hz. *kHz is an abbreviation of kilohertz or 1000 hertz, MHz is abbreviation of megahertz or 1,000,000 hertz, where hertz is a unit of frequency. 9 SET MODE ....................................................................... 59 ­ 62 I General ............................................................................................... 62 10 OTHER FUNCTIONS ........................................................ 63 ­ 71 I Low battery indicator ........................................................................... 63 I AFC function ........................................................................................ 63 I Monitor function ................................................................................... 64 I Lock function ....................................................................................... 64 I ATT function ........................................................................................ 65 I NB/ANL function .................................................................................. 65 I Sleep timer .......................................................................................... 66 I User TS setting .................................................................................... 66 I Memory search function ...................................................................... 67 I Auto mode and TS function ................................................................. 69 I Resetting the CPU ............................................................................... 70 I Data cloning ........................................................................................ 71 OPERATING NOTES The IC-R10 may receives its own oscillated frequency, resulting in no reception or only noise reception, on some frequencies. The IC-R10 may receive interference from extremely strong signals on different frequencies or when using an external high-gain antenna. 11 ALPHANUMERIC KEY ASSIGNMENT ................................... 72 12 CONTROL COMMANDS .................................................. 73 ­ 74 I General ................................................................................................ 73 I Data format .......................................................................................... 73 I Command table ................................................................................... 73 13 TROUBLESHOOTING ...................................................... 75 ­ 76 14 SPECIFICATIONS ................................................................... 77 15 OPTIONS ................................................................................. 78 iv 1 PANEL DESCRIPTION I Front and side panels SPEAKER Emits the receive audio. FUNCTION SWITCH (pgs. 5, 6) While pushing [FUNC], the secondary functions of switches and controls can be accessed. CI-V JACK (p. 73) Connect the optional OPC-478 CLONING CABLE for remote control or data cloning. EXTERNAL DC POWER JACK (p. 8) Connect the supplied wall charger for charging the installed Ni-Cd battery cells. Be careful of overcharging! Operation with an external DC power source simultaneously charges the installed batteries. When [CHARGE] switch is ON, see p. 8. FUNCTION DISPLAY (p. 3) Indicates the operating condition. KEYPAD (pgs. 5, 6) Numeral and other function keys for tuning and activating functions. 1 PANEL DESCRIPTION 1 I Top panel EXTERNAL SPEAKER JACK [SP] Connect an 8 ohm optional speaker or an earphone, if desired. The internal speaker will not function when either option is connected. Connect the optional OPC478/479 CLONING CABLE for cloning from a PC or another ICR10 (p. 71). TUNING CONTROL [DIAL] Used to set an operating frequency (p. 15), memory channel (p. 24), etc. ANTENNA CONNECTOR (p. 9) Connects the supplied flexible antenna. Be careful when connecting an external antenna (See Operating Notes, p. iv). VOLUME CONTROL [VOL] (p. 10) Adjusts the audio output level. SQUELCH CONTROL [SQL] (p. 11) Varies the squelch threshold point for audio mute. · Pushing [MONI] opens the squelch momentarily. Varies the RF gain in LSB, USB and CW modes. 2 1 PANEL DESCRIPTION I Function display 1 2 3 4 5 6 7 8 0 9 MEMO VFO EASY VSC AT T WFM AM LSB USB CW AFC A 3 PANEL DESCRIPTION q SLEEP TIMER INDICATOR Appears while the sleep timer is activated (p. 66). w FUNCTION INDICATOR Appears while the function ([FUNC]) switch is pushed. e MEMORY MODE INDICATOR Appears while in memory mode (p. 23). r VFO MODE INDICATOR Appears while in VFO mode (p. 11). t RECEIVE MODE INDICATOR Indicates the selected receive mode (p. 12). y EASY MODE INDICATOR Appears while in easy mode (p. 50). u VSC INDICATOR Appears while the VSC function is turned ON (p. 38). i ATTENUATOR INDICATOR Appears while the attenuator is turned ON (p. 65). o AFC INDICATOR Appears while the AFC function is turned ON (p. 63). !0 LOCK INDICATOR Appears while the lock function is activated (p. 64). !1 MULTI-FUNCTION DOT MATRIX Indicates the following items: Opening message (p. 10) Receive frequency (p. 11) Tuning steps (p. 13) Band scope (p. 17) Memory bank and channel number (p. 23) Memory name (p. 31) Memory bank name (p. 32) Programmable scan edges and name (p. 40) Priority frequency (p. 49) SET mode contents (p. 59) Signal strength indicator 1 4 1 PANEL DESCRIPTION I Keypad KEY POWER PRIMARY FUNCTION SECONDARY FUNCTION (while pushing [FUNC]) Push for 1 sec. to toggle power ON and OFF. Opening mesNot available sage appears for 1 sec. after power ON (p. 10). Push and hold this switch to force the squelch open (p. 64). Not available Selects a receive mode: FM, AM, USB, LSB, CW or WFM Selects tuning step set mode (p. 13). Selects SET mode (p. 59). In VFO mode: writes to a memory channel (p. 29). In MEMORY mode: transfers memory contents to VFO mode (p. 33) or copies to another channel (p. 33). In VFO mode: selects a dial select step (p. 16). Selects memory channel name search mode (p. 67). MONI TS MODE SET (p. 12). Clears numeric key input (p. 14). Stops scanning (p. 39). Toggles VFO or MEMORY mode (pgs. 11, 23). CLR MW V/M DIAL SEL SCAN SEARCH Starts/stops scanning (p. 39). Selects EASY mode (p. 50). EASY LOCK EDIT NB/ANL 51). Selects memory edit mode. (except when in VFO mode; p. Locks all switches and controls electronically except [VOL], [SQL], [FUNC], [POWER] and [MONI] (p. 64). In VFO mode: enters the selected receive frequency (p. 14). Activates the noise blanker while in SSB and CW mode, or In MEMORY mode: enters the selected memory channel by the ANL function while in AM mode (p. 65). ENT the memory search function (p. 68). 5 PANEL DESCRIPTION 1 KEY BSCOPE PRIMARY FUNCTION SECONDARY FUNCTION (while pushing [FUNC]) When FM receive mode is selected in VFO mode: toggles the band scope function (p. 17). Toggles the VSC function ON and OFF (p. 38). Selects the sleep timer conditions (p. 66). 1 VSC 2 SLEEP 3 PROG-S BSCOPE VSC SLEEP 4 AMWS 1 PROG-S 2 AMWS 3 SIGNAVI In VFO mode: sets program scan edge frequencies for programmed scan (p. 40). In VFO mode: sets program scan edge frequencies for auto memory write scan (p. 41). In VFO mode: toggles the signal navigator function ON/OFF for full, programmed or auto memory write scan (p. 46). In MEMORY mode: sets the receive mode for mode select scan (p. 44). In MEMORY mode: sets the BANK for bank scan (p. 43). Starts/stop priority watch (p. 49). Toggles the attenuator ON/OFF (p. 65). 5 SIGNAVI 4 MODE-S 5 BANK-S 6 PRIO 6 MODE-S 7 AFC 8 ATT 9 NB/ANL 7 BANK-S . 0 ENT 8 PRIO 9 ATT 0 6 2 Ni-Cd BATTERIES AND ACCESSORIES I About Ni-Cd batteries Ni-Cd battery life If your Ni-Cd batteries seems to have no capacity even after being fully charged, completely discharge them by leaving the power ON overnight. Then, fully charge the Ni-Cd batteries again. If the Ni-Cd batteries still do not retain a charge (or very little), new batteries must be purchased. I Charging Ni-Cd batteries The supplied Ni-Cd batteries are rechargeable and can be charged approx. 300 times. Charge the batteries before first operating the receiver or when the batteries become exhausted. If you want to be able to charge the batteries more than 300 times, the following points should be observed: 1. Avoid overcharging. The charging period should be less than 48 hours. 2. Use the batteries until they become almost completely exhausted under normal conditions. We recommend battery charging just after receiving becomes impossible. Recycling information (U.S.A. only) The product that you purchased contains rechargeable batteries. The batteries are recyclable. At the end of their useful life, under variNi-Cd ous state and local laws, it may be illegal to dispose of these batteries into the municipal waste stream. Call 1-800-8-BATTERY for battery recycling options in your area or contact your dealer. RC RB I Charging precautions NEVER attempt to charge dry cell batteries. This will cause internal liquid leakage and damage the receiver. NEVER connect two or more chargers at the same time. Charging may not occur under temperatures of 10°C (50°F) or over temperatures of 40°C (104°F). 7 RBR C Ni-Cd BATTERIES AND ACCESSORIES 2 I Battery installation Install 4 AA (R6) size batteries as illustrated below. Remove the cover from the receiver. I Charging connections Confirm that the [CHARGE] switch is ON, then connect the supplied wall charger via an AC outlet as shown below. BC-110A/E/D/V* *Not supplied with some versions. Install 4 AA (R6) size dry cell, alkaline or the supplied Ni-Cd batteries into the receiver. to [DC] CP-12L (optional) To cigarette lighter socket Black OPC-254L (optional) To power supply (4.8­13.5 V DC) White CAUTION: Make sure the polarity of the batteries is correct before installing. Reverse polarity may damage the receiver. NOTE: DO NOT use different types of batteries at the same time otherwise the receiver may not work properly. CAUTION: Make sure the [CHARGE] switch is in the OFF position when operating the receiver with one of the above power supplies. 8 2 Ni-Cd BATTERIES AND ACCESSORIES I Accessory attachment Antenna Insert the supplied antenna into the antenna connector and rotate the antenna as shown in the diagram below. Keep the jack cover attached when jacks are not in use to avoid bad contacts. Belt clip Attach the belt clip using the supplied screws. Conveniently attaches to your belt. Handstrap Attach the handstrap as shown in the diagram below. Facilities carrying. 9 BASIC OPERATION I General Operating the IC-R10 is easy. However, in order to get the most out of its operating potential, please go through the following procedures, step-by-step. Then, try the examples contained at the end of this chapter. 3 I Selecting VFO mode 1. Turn power ON Push [POWER] for 1 sec. to turn power ON. · Opening message is displayed for 1 sec. 2. Adjust the volume Adjust the audio to a suitable level using [VOL]. What is VFO? The IC-R10 has several operating modes, each of which has its own distinct functions. VFO (Variable Frequency Operation) is one of these modes. VFO mode is used to change the operating frequency, receive mode, tuning step, etc. Therefore, for most every day operations of the receiver, you will be using VFO mode. VFO Presented by ICOM Opening message as above is displayed on the multi-function display. FM Check the squelch position (see next page) or VSC function setting (p. 38) if no audio is emitted. 10 3 BASIC OPERATION 3. Adjust the squelch Rotate [SQL] maximum counterclockwise, then rotate it clockwise until audio is just muted when receiving no signal for FM, WFM or AM mode. (see right page) 3-1. Adjust the RF gain Rotate [SQL] maximum counterclockwise, to adjust RF gain to optimum level. 4. Select VFO mode When MEMORY mode is selected, push [V/M] to select VFO mode. When SET or TS set mode is selected, push [CLR] to select VFO mode. · The VFO indicator appears. VFO indicator VFO FM What is squelch? A squelch circuit allows you to mute undesired noise while receiving no signal and emit audio while receiving signals. This provides quiet standby. The [MONI] switch changes the squelch setting. This is useful for weak signal reception (p. 64). 11 What is RF gain? RF gain controls receive sensitivity gain--reduce the gain when you don't want to receive very weak signals or when excessively strong interfering signals are being received, etc. 144.0000 BASIC OPERATION 3 I Selecting a receive mode What are receive modes? Radio signals can be propagated in a variety of ways (or modes). Each mode has its own physical properties that determine to some degree its uses. FM VFO The IC-R10 receives the 6 most common modes: AM, FM, WFM, USB, LSB and CW. When you want to tune a station, you MUST set the receive mode first. The table below shows common uses for each mode. VFO WFM 144.0000 VFO AM 144.0000 MODE AM FM WFM USB, LSB CW COMMON USAGE amateur, aviation, broadcasting amateur, utility TV broadcasting, FM broadcasting commercial, amateur, short wave radio commercial, amateur VFO VFO LSB VFO 144.0000 USB 144.0000 CW 144.0000 144.0000 When programmed (see p. 69) VFO Major symptoms of incorrect receive mode Distorted sound Sudden interruption in reception Noise only Noise with weak reception Low or unstable signal strength indicator value 144.0000 AUTO MODE FM 12 3 BASIC OPERATION I Selecting a tuning step What are tuning steps? Tuning steps are the frequency change increments when you rotate the tuning control or operate a scan. The following steps are available: 0.1, 0.5, 1, 5, 6.25, 8, 9, 10, 12.5, 15, 20, 25, 30, 50, 100 kHz and user programmable tuning steps (p. 66). It is important to set the proper tuning step for the type of station you want to listen to. Some tuning steps are determined by frequency band or receive mode and others are set by tradition. Generally speaking, if you set a tuning step smaller than that needed you will still be able to tune a station you want (or scan it), however, tuning (or scanning) will not be efficient. On the other hand, if you select a tuning step which is too large, you may not be able to find the station you are looking for. Consult local listings. 13 1. Call up the tuning step set mode Once you have selected VFO mode and the desired receive mode, while pushing [FUNC], push [(MODE)TS]. 2. Select the tuning step 1 Rotate [DIAL] to select the desired tuning step. 2 Push [CLR] to return to VFO mode after the selection. 1 2 BASIC OPERATION 3 I Tuning a frequency (via the keypad) When you know the exact frequency you want to listen to, the quickest way to tune it is by direct keypad entry. Remember that the frequency must be between 0.5 MHz and 1300 MHz. The diagram below shows the correlation between the function display frequency digits and the frequency. VFO FM 1. Select the frequency Select VFO mode and the receive mode in advance then: Push the numeral keys in the same order as the frequency you want to tune (including the decimal key). BSCOPE VSC SLEEP 2. Enter the frequency When the frequency you want is displayed: Push [ENT] (or numeral keys for the 0.1 kHz digit) to enter it. 1 PROG-S 2 AMWS 3 SIGNAVI 4 MODE-S 5 BANK-S 6 PRIO 300.0000 100 Hz 1 kHz 10 kHz 100 kHz 7 AFC 8 ATT 9 NB/ANL 1 GHz 100 MHz 10 MHz 1 MHz . 0 ENT · If you make a mistake, push [CLR] and start again. · When you select a frequency outside of the allowed range, the display will revert back to the previously displayed frequency. 14 3 BASIC OPERATION I Tuning a frequency (via the dial) When you want to listen to frequencies near the displayed frequency, the easiest way to tune them is with the tuning dial. All signals have what is called an "occupied bandwidth." They will be received as long as the receiver is tuned anywhere within this bandwidth. Even though the frequency received may not be the central frequency, the tuning step should be made as small as possible (0.5 or 5 kHz) and the receiver tuned to the point of greatest signal strength indicator deflection. To change frequencies faster than the tuning step, use the dial select function (p. 16). 1. Select VFO mode and a receive mode q Push [CLR] or [V/M] to select VFO mode. w Push [MODE] to select a receive mode. e Set tuning step if desired (p. 14). 2. Tune a frequency Rotate [DIAL] to change the frequency. · The frequency changes in increments determined by the tuning step. · To change the frequency faster, use the dial select function (p. 16). 2 1 15 BASIC OPERATION 3 I Dial select steps What are dial select steps? When tuning with the dial, if you want to change the frequency faster than the selected tuning step can, use the dial select function. A dial select step is an increment of frequency change much like a tuning step is. Unlike a tuning step however, a dial select step has no relation to the type of station you want to tune or to the scan operations. Dial select steps are available for: VFO FM Changing the frequency with the dial select step In VFO mode: Push and hold [FUNC], then rotate [DIAL]. To change the dial select step: While pushing [FUNC], push [(SCAN)DIAL SEL] one or several times until the frequency digit you want to change flashes. FUNC VFO FM + DIAL SEL 144.0000 VFO 144.0000 SCAN DIAL SEL FM SCAN 144.0000 VFO DIAL SEL SCAN 100 kHz 1 MHz 10 MHz 100 MHz DIAL SEL FM SCAN 144.0000 VFO DIAL SEL FM SCAN 144.0000 16 3 BASIC OPERATION I Band scope function What is the band scope function? The band scope detects signal availability in the range of ±5 channels (up to ±100 kHz) from the displayed frequency, and displays the result on the multi function dot-matrix display. This gives you a visual reference of current band conditions. In this case, channel refers to sweep step or channel space according to the set tuning step. For example, when the tuning step is set to 5 kHz, the band scope detects 25 kHz above and below the displayed frequency, then displays the result on the LCD. When the tuning step is set above 20 kHz, the band scope function automatically changes its sweep step to 20 kHz. However, when the sweep step is changed to 20 kHz, the tuning step remains the same. 3 Preparation The band scope function is activated only when FM receive mode is selected in VFO mode. q Push [V/M] to select VFO mode. (p. 11) w Push [MODE] one or more times to select FM mode. (p. 12) e While pushing [FUNC], push [(MODE)TS] r Rotate [DIAL] to select the tuning/sweep step. t Push [CLR] to return to VFO mode. 4 Also, when a user-programmable tuning step is selected, the band scope function automatically selects the 20 kHz sweep step. 23 1 5 17 BASIC OPERATION 3 Set band scope function q While pushing [FUNC], push [(1)BSCOPE]. VFO FM 144.0000 signal strength lower freq. higher freq. displayed freq. Repeat the above step or push [CLR] to turn OFF the band scope function. 18 3 BASIC OPERATION I Listening example 1 -- television broadcast in WFM mode 1. Turn power ON Push [POWER] for 1 sec. to turn power ON. 5. Select the receive mode Television sound is broadcast in WFM mode. If the receiver is not already in WFM mode: Push [MODE] one or more times until WFM appears in the function display. 6. Select the tuning step In most countries* television stations are spaced about 50 kHz apart. To select the 50 kHz tuning step: While pushing [FUNC], push [(MODE)TS], then rotate [DIAL] until the function display shows "50 kHz". Push [CLR] after setting to return to VFO mode. VFO 2. Select VFO Push [CLR] or [V/M] to select VFO mode. 3. Adjust volume Rotate [VOL] to obtain the desired level of audio output. Appears MODE WFM VFO 4. Adjust squelch Rotate [SQL] fully counterclockwise, then clockwise until the audio noise just disappears. 144.0000 [DIAL] SET TS TS 50.00kHz WFM *Check listings for your area. 19 BASIC OPERATION 3 (Example 59.75 MHz) 7. Tune the station Use the keypad to enter the frequency -- (example 59.75 MHz). [Example] 5 WFM VFO (Example 59.25 MHz) 7-1. Tune the station Enter the frequency from the 100 kHz digit when you want to change below the 1 MHz digit only -- (example from 59.75 MHz to 59.25 MHz). [Example] 8. Use the tuning dial Rotate [DIAL] to search for nearby stations above and below the tuned frequency. VFO WFM 59.2000 VFO 9 . VFO 59 . WFM VFO . WFM 59. VFO [DIAL] WFM 59.2500 VFO 59. 2 WFM 5 7 WFM VFO 59. VFO 25 [DIAL] WFM 59.3000 5 59. VFO 75 ENT WFM 59.2500 ENT WFM 59.7500 NOTE: WFM and regular FM share the same circuit. Depending on the receive condition, this may result in distortion. In such cases, try lowering the frequency 30­50 kHz. 20 3 BASIC OPERATION I Listening example 2 -- airband broadcast in AM mode 1. Turn power ON Push [POWER] for 1 sec. to turn power ON. 5. Select the receive mode Airband communications are in AM mode. If the receiver is not already in AM mode: Push the [MODE] switch one or more times until AM appears in the function display. Appears MODE VFO AM 6. Select the tuning step Tuning steps for the airband are usually 25 kHz*. To set the 25 kHz tuning step: While pushing [FUNC], push [(MODE)TS], then rotate [DIAL] until "25 kHz" appears in the function display. 2. Select VFO Push [CLR] or [V/M] to select VFO mode. 3. Adjust volume Rotate [VOL] to obtain the desired level of audio output. 4. Adjust squelch Rotate [SQL] fully counterclockwise, then clockwise until the audio noise just disappears. 144.0000 [DIAL] SET TS TS 25.00kHz VFO AM *Check listings for your area. 21 BASIC OPERATION 3 (Example 118.00 MHz) (Example 118.925 MHz) 7. Tune the station Enter a frequency of 118.0000 MHz* using the keypad (p. 14). 7-1. Tune the station