Icom Ic_r20 Communications Reciever Instruction Manual
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Page 21
8 2 BATTERY INSTALLATION/CHARGING 12 ■Battery installationMake sure receiver power is turned OFF before installing or replacing the batteries. qRemove the battery cover from the receiver. wFor alkaline battery use, attach the supplied battery spacer. eInstall 3 R6 (AA) size alkaline batteries.•Be sure to observe the correct polarity.Keep the battery contacts clean to avoid rust or poor contact. It’s a good idea to clean the battery terminals once a week. D D Battery pack installationqRemove the battery...
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■CautionD D Battery cautionCAUTION! NEVERshort the battery terminals. Current will flow into metal objects, so be careful when placing battery pack in handbags, etc. NEVERincinerate used battery packs or battery cells. Internal battery gas may cause explosion. NEVERmix old and new batteries. Make sureall battery cells are the same brand, type and capacity. Either of the above may cause a fire hazard or damage the receiver if ignored.D D Charging cautionRecommended temperature for charging: ±0˚C to +35˚C...
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10 2 BATTERY INSTALLATION/CHARGING 2 D D CP-18A/E fuse replacementIf the fuse blows or the receiver stops functioning while oper- ating with the optional CP-18A/E, find the source of the prob- lem if possible, and replace the damaged fuse with a new rated one (FGB 5 A) as shown below. D D Rapid charging with the BC-156The optional BC-156 provides rapid charging of battery pack (BP-206). •Charging periods:2.5 hours (w/BP-206) CAUTION:Shorten or remove the telescoping antenna be- fore charging to prevent...
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11
FREQUENCY AND CHANNEL SETTING
3■Mode selectionD
D
VFO modeVFO mode is used for the desired frequency setting within the
frequency coverage.
➥Push [VFO MHz]to select VFO mode.What is VFO?
VFO is an abbreviation of Variable Frequency Oscillator. Fre-
quencies for receiving are generated and controlled by theVFO.
D D
Memory mode/PreSet
*/TV
*/Weather
†channels
Memory mode is used for operation of memory channels
which have programmed frequencies. PreSet channels are
used for most-often used frequencies...](http://img.usermanuals.tech/thumb/2452/82810/w300_icom_r20-wideband-scanner-reciever_manual_d-23.png "Page 24
11
FREQUENCY AND CHANNEL SETTING
3■Mode selectionD
D
VFO modeVFO mode is used for the desired frequency setting within the
frequency coverage.
➥Push [VFO MHz]to select VFO mode.What is VFO?
VFO is an abbreviation of Variable Frequency Oscillator. Fre-
quencies for receiving are generated and controlled by theVFO.
D D
Memory mode/PreSet
*/TV
*/Weather
†channels
Memory mode is used for operation of memory channels
which have programmed frequencies. PreSet channels are
used for most-often used frequencies...")
11 FREQUENCY AND CHANNEL SETTING 3■Mode selectionD D VFO modeVFO mode is used for the desired frequency setting within the frequency coverage. ➥Push [VFO MHz]to select VFO mode.What is VFO? VFO is an abbreviation of Variable Frequency Oscillator. Fre- quencies for receiving are generated and controlled by theVFO. D D Memory mode/PreSet */TV */Weather †channels Memory mode is used for operation of memory channels which have programmed frequencies. PreSet channels are used for most-often used frequencies...
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12
3
FREQUENCY AND CHANNEL SETTING
3
■Operating band selectionThe receiver can receive the AM broadcast, HF bands,
50 MHz, FM broadcast, VHF air, 144 MHz, 300 MHz,
400 MHz, 800 MHz,* 1200 MHz or 2400 MHz.
➥In VFO mode, push [BAND]several times to select the de-
sired frequency band.•If the other than VFO mode is selected, such as a memory/Pre-
Set/TV/Weather channel, push [VFO MHz]to select VFO mode
first, then push [BAND]to select the desired band.➥While pushing and holding [BAND], rotating...](http://img.usermanuals.tech/thumb/2452/82810/w300_icom_r20-wideband-scanner-reciever_manual_d-24.png "Page 25
12
3
FREQUENCY AND CHANNEL SETTING
3
■Operating band selectionThe receiver can receive the AM broadcast, HF bands,
50 MHz, FM broadcast, VHF air, 144 MHz, 300 MHz,
400 MHz, 800 MHz,* 1200 MHz or 2400 MHz.
➥In VFO mode, push [BAND]several times to select the de-
sired frequency band.•If the other than VFO mode is selected, such as a memory/Pre-
Set/TV/Weather channel, push [VFO MHz]to select VFO mode
first, then push [BAND]to select the desired band.➥While pushing and holding [BAND], rotating...")
12 3 FREQUENCY AND CHANNEL SETTING 3 ■Operating band selectionThe receiver can receive the AM broadcast, HF bands, 50 MHz, FM broadcast, VHF air, 144 MHz, 300 MHz, 400 MHz, 800 MHz,* 1200 MHz or 2400 MHz. ➥In VFO mode, push [BAND]several times to select the de- sired frequency band.•If the other than VFO mode is selected, such as a memory/Pre- Set/TV/Weather channel, push [VFO MHz]to select VFO mode first, then push [BAND]to select the desired band.➥While pushing and holding [BAND], rotating...
Page 26
13 3 FREQUENCY AND CHANNEL SETTING • Available frequency bands BAND BAND AM broadcast band HF band 50 MHz band 800 MHz band 400 MHz bandFM broadcast band VHF air band 144 MHz band 300 MHz band 1200 MHz band 2400 MHz band : Push : Rotating while pushing Initial frequencies shown will differ according to version. AM MODE AM MODE FM MODE WFM MODE AM MODE FM MODE AM MODE FM MODE FM MODE 1620 50005100076000 118000 146010 370000 440000 800000 FM MODE1295000 FM MODE2425000
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14 3 FREQUENCY AND CHANNEL SETTING 3 ■Setting a tuning stepThe tuning step can be selected for each frequency band in- dependently, however, the tuning steps, 8.33 kHz and 9 kHz, only appear when setting the tuning step for the VHF air band and AM broadcast band, respectively. The following tuning steps are available for the IC-R20. •0.01 kHz • 0.1 kHz • 1.0 kHz • 5.0 kHz • 6.25 kHz •8.33 kHz* • 9.0 kHz* • 10.0 kHz • 12.5 kHz • 15.0 kHz •20.0 kHz • 25.0 kHz • 30.0 kHz • 50.0 kHz • 100.0 kHz * Available...
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15
3
FREQUENCY AND CHANNEL SETTING
D D
Using the keypadThe frequency can be directly set via numeral
keys.•When editing a frequency outside of the fre-
quency range, the previously displayed frequency
is automatically recalled after editing last digit.qPush [VFO MHz]to select VFO mode, if
necessary.wEnter the desired frequency via the keypad.•Direct input can be set until 1 kHz digit, rotate
[R-DIAL]to set below 1 kHz frequency after
set tuning steps, if necessary. (See the previ-
ous page for setting...](http://img.usermanuals.tech/thumb/2452/82810/w300_icom_r20-wideband-scanner-reciever_manual_d-27.png "Page 28
15
3
FREQUENCY AND CHANNEL SETTING
D D
Using the keypadThe frequency can be directly set via numeral
keys.•When editing a frequency outside of the fre-
quency range, the previously displayed frequency
is automatically recalled after editing last digit.qPush [VFO MHz]to select VFO mode, if
necessary.wEnter the desired frequency via the keypad.•Direct input can be set until 1 kHz digit, rotate
[R-DIAL]to set below 1 kHz frequency after
set tuning steps, if necessary. (See the previ-
ous page for setting...")
15 3 FREQUENCY AND CHANNEL SETTING D D Using the keypadThe frequency can be directly set via numeral keys.•When editing a frequency outside of the fre- quency range, the previously displayed frequency is automatically recalled after editing last digit.qPush [VFO MHz]to select VFO mode, if necessary.wEnter the desired frequency via the keypad.•Direct input can be set until 1 kHz digit, rotate [R-DIAL]to set below 1 kHz frequency after set tuning steps, if necessary. (See the previ- ous page for setting...
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16
3
FREQUENCY AND CHANNEL SETTING
3
■Receive mode selectionReceive modes are determined by the physical properties of
the radio signals. The receiver has 6 receive modes: FM,
WFM, AM, LSB, USB and CW modes. The mode selection is
stored independently in each band and memory channels.
Typically, AM mode is used for the AM broadcast stations
(0.495–1.620 MHz) and VHF air band (118–135.995 MHz),
and WFM is used for FM broadcast stations (76–107.9 MHz).
➥Push [MODE SCAN]momentarily several times to select...](http://img.usermanuals.tech/thumb/2452/82810/w300_icom_r20-wideband-scanner-reciever_manual_d-28.png "Page 29
16
3
FREQUENCY AND CHANNEL SETTING
3
■Receive mode selectionReceive modes are determined by the physical properties of
the radio signals. The receiver has 6 receive modes: FM,
WFM, AM, LSB, USB and CW modes. The mode selection is
stored independently in each band and memory channels.
Typically, AM mode is used for the AM broadcast stations
(0.495–1.620 MHz) and VHF air band (118–135.995 MHz),
and WFM is used for FM broadcast stations (76–107.9 MHz).
➥Push [MODE SCAN]momentarily several times to select...")
16 3 FREQUENCY AND CHANNEL SETTING 3 ■Receive mode selectionReceive modes are determined by the physical properties of the radio signals. The receiver has 6 receive modes: FM, WFM, AM, LSB, USB and CW modes. The mode selection is stored independently in each band and memory channels. Typically, AM mode is used for the AM broadcast stations (0.495–1.620 MHz) and VHF air band (118–135.995 MHz), and WFM is used for FM broadcast stations (76–107.9 MHz). ➥Push [MODE SCAN]momentarily several times to select...
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17
BASIC OPERATION
4■ReceivingMake sure charged battery pack (BP-206) or brand new al-
kaline batteries are installed (p. 8).
qPush [POWER]for 1 sec. to turn power ON.
wRotate [L-DIAL](or push [Y Y
]or [Z Z
]) to set the desired
audio level.
•The frequency display shows the volume level while setting. See
the section at right for details.
eSet the receiving frequency. (p. 14)
rSet the squelch level. (p. 18)
•While pushing [SQL], rotate [R-DIAL].
•The first click of [R-DIAL]indicates the current squelch...](http://img.usermanuals.tech/thumb/2452/82810/w300_icom_r20-wideband-scanner-reciever_manual_d-29.png "Page 30
17
BASIC OPERATION
4■ReceivingMake sure charged battery pack (BP-206) or brand new al-
kaline batteries are installed (p. 8).
qPush [POWER]for 1 sec. to turn power ON.
wRotate [L-DIAL](or push [Y Y
]or [Z Z
]) to set the desired
audio level.
•The frequency display shows the volume level while setting. See
the section at right for details.
eSet the receiving frequency. (p. 14)
rSet the squelch level. (p. 18)
•While pushing [SQL], rotate [R-DIAL].
•The first click of [R-DIAL]indicates the current squelch...")
17 BASIC OPERATION 4■ReceivingMake sure charged battery pack (BP-206) or brand new al- kaline batteries are installed (p. 8). qPush [POWER]for 1 sec. to turn power ON. wRotate [L-DIAL](or push [Y Y ]or [Z Z ]) to set the desired audio level. •The frequency display shows the volume level while setting. See the section at right for details. eSet the receiving frequency. (p. 14) rSet the squelch level. (p. 18) •While pushing [SQL], rotate [R-DIAL]. •The first click of [R-DIAL]indicates the current squelch...