Instruction Manual
Page 2
... RF electromagnetic energy is within the FCC allowable limits for occupational use with the FCC RF exposure limits for use the Icom belt-clips which persons are exposed as "Occupational Use Only", meaning it must be exceeded. Electromagnetic Interference/Compatibility During transmissions, your expose to Radio Frequency Elec- Use of accessories other devices or systems. To avoid such interference, turn off to one side. tery Case...
... RF electromagnetic energy is within the FCC allowable limits for occupational use with the FCC RF exposure limits for use the Icom belt-clips which persons are exposed as "Occupational Use Only", meaning it must be exceeded. Electromagnetic Interference/Compatibility During transmissions, your expose to Radio Frequency Elec- Use of accessories other devices or systems. To avoid such interference, turn off to one side. tery Case...
Instruction Manual
Page 3
... and craftsmanship. struction manual contains important operating instructions for purchasing this Icom product. CAUTION Equipment damage may occur. ii The IC-A24/A6 VHF AIR BAND TRANSCEIVER is designed and built with years of personal injury, fire or electric shock. SAVE THIS INSTRUCTION MANUAL- Some versions do not include a battery pack, wall charger, headset adapter or carrying case. No risk of trouble-free operation. NOTE If disregarded...
... and craftsmanship. struction manual contains important operating instructions for purchasing this Icom product. CAUTION Equipment damage may occur. ii The IC-A24/A6 VHF AIR BAND TRANSCEIVER is designed and built with years of personal injury, fire or electric shock. SAVE THIS INSTRUCTION MANUAL- Some versions do not include a battery pack, wall charger, headset adapter or carrying case. No risk of trouble-free operation. NOTE If disregarded...
Instruction Manual
Page 4
... void your ears, reduce the volume level or discontinue use of the battery pack. DO NOT operate the transceiver near metal objects, carrying in direct sunlight or headset or other countries. Otherwise, the battery pack or installed dry cell batteries will hausted. porated (Japan) in your authority to NEVER short the terminals of non-Icom battery packs/chargers may flow into nearby...
... void your ears, reduce the volume level or discontinue use of the battery pack. DO NOT operate the transceiver near metal objects, carrying in direct sunlight or headset or other countries. Otherwise, the battery pack or installed dry cell batteries will hausted. porated (Japan) in your authority to NEVER short the terminals of non-Icom battery packs/chargers may flow into nearby...
Instruction Manual
Page 5
... Setting a frequency 8 I Setting a squelch level 8 I Selecting a weather channel 8 I Receiving 9 I Transmitting 9 I ANL function 9 I Low battery indicator 10 I Recall function 10 I Setting weather alert function 11 I Accessing 121.5 MHz emergency frequency 11 I Lock function 11 I Side tone function 11 I Setting beep tone 11 I Backlighting 11 4 MEMORY OPERATION 12 - 15 I Memory channel selection 12 I Transferring memory contents 12 I Programming a memory channel 13 I Memory names 14 I Clearing the memory contents 14 5 SCAN OPERATION 16 - 17 I Scan types 16 I COM band scan...
... Setting a frequency 8 I Setting a squelch level 8 I Selecting a weather channel 8 I Receiving 9 I Transmitting 9 I ANL function 9 I Low battery indicator 10 I Recall function 10 I Setting weather alert function 11 I Accessing 121.5 MHz emergency frequency 11 I Lock function 11 I Side tone function 11 I Setting beep tone 11 I Backlighting 11 4 MEMORY OPERATION 12 - 15 I Memory channel selection 12 I Transferring memory contents 12 I Programming a memory channel 13 I Memory names 14 I Clearing the memory contents 14 5 SCAN OPERATION 16 - 17 I Scan types 16 I COM band scan...
Instruction Manual
Page 7
... AND MICROPHONE JACKS [MIC/SP] (p. 34) Connects an OPC-499 HEADSET ADAPTER and headset, if desired. !0 FUNCTION KEY Push to call the stored frequency in the recall mode. ➥ Push , then push [Ω]/[≈]to replace stored recall frequencies to se- PANEL DESCRIPTION 1 q BACKLIGHT SWITCH [LIGHT] (p. 11) Turns the backlight for display and keypad ON or OFF. release to set the squelch level and beep tone level. u SQUELCH KEY...
... AND MICROPHONE JACKS [MIC/SP] (p. 34) Connects an OPC-499 HEADSET ADAPTER and headset, if desired. !0 FUNCTION KEY Push to call the stored frequency in the recall mode. ➥ Push , then push [Ω]/[≈]to replace stored recall frequencies to se- PANEL DESCRIPTION 1 q BACKLIGHT SWITCH [LIGHT] (p. 11) Turns the backlight for display and keypad ON or OFF. release to set the squelch level and beep tone level. u SQUELCH KEY...
Instruction Manual
Page 8
... program the memory name. (p. 14) NOTE: Some functions may not be available depending on versions. version only). (p. 8) ➥ Push to enter the weather channel selection mode (U.S.A. to select the 121.5 MHz emergency frequency. • DC POWER CONNECTION IC-A24/A6 CP-20 (for 11 24 V) (optional) !4 DC POWER JACK Connect the AC adapter or optional cable to charge the battery pack or to operate by external power...
... program the memory name. (p. 14) NOTE: Some functions may not be available depending on versions. version only). (p. 8) ➥ Push to enter the weather channel selection mode (U.S.A. to select the 121.5 MHz emergency frequency. • DC POWER CONNECTION IC-A24/A6 CP-20 (for 11 24 V) (optional) !4 DC POWER JACK Connect the AC adapter or optional cable to charge the battery pack or to operate by external power...
Instruction Manual
Page 9
... select the CDI display from the CDI display in NAV band. (p. 19)*1 PANEL DESCRIPTION 1 Push , then push [5•DUP-W] to set the duplex 1 frequency in NAV band for U.S.A. version only. (p. 24)*1 Push , then push [6•DUP] to turn the beep tone setting mode ON (p. 11). • Adjustable level; 0 to 9 Push , then push [9•TAG] to set the displayed memory or weather channel as a "TAG" channel. (p. 17) *1 These...
... select the CDI display from the CDI display in NAV band. (p. 19)*1 PANEL DESCRIPTION 1 Push , then push [5•DUP-W] to set the duplex 1 frequency in NAV band for U.S.A. version only. (p. 24)*1 Push , then push [6•DUP] to turn the beep tone setting mode ON (p. 11). • Adjustable level; 0 to 9 Push , then push [9•TAG] to set the displayed memory or weather channel as a "TAG" channel. (p. 17) *1 These...
Instruction Manual
Page 10
... when battery replacement is in NAV mode. ➥"DUP" blinks while setting the duplex frequency. y LOCK INDICATOR (p. 11) Appears while the lock function is necessary. w TX INDICATOR (p. 9) Appears while transmitting. r DUPLEX INDICATOR (IC-A24 only) (p. 24) ➥"DUP" appears when the duplex function is selected. e RX INDICATOR (p. 9) Appears when receiving a signal or when the squelch opens. u FREQUENCY DISPLAY (pgs. 8, 14) ➥ Shows the operating frequency. ➥...
... when battery replacement is in NAV mode. ➥"DUP" blinks while setting the duplex frequency. y LOCK INDICATOR (p. 11) Appears while the lock function is necessary. w TX INDICATOR (p. 9) Appears while transmitting. r DUPLEX INDICATOR (IC-A24 only) (p. 24) ➥"DUP" appears when the duplex function is selected. e RX INDICATOR (p. 9) Appears when receiving a signal or when the squelch opens. u FREQUENCY DISPLAY (pgs. 8, 14) ➥ Shows the operating frequency. ➥...
Instruction Manual
Page 13
... digit is open. I Setting a squelch level ï Using keypad The transceiver has a noise squelch circuit to select the 3 number or WX CH number appears on the function dis- Push again to frequency mode. • To select the 1 MHz tuning step, push , then rotate [DIAL]. q Push [SQL•WX-ALERT], then rotate [DIAL] to mute undesired 2 q Push [PWR] for 2 sec. play . 3 BASIC OPERATION I Setting a frequency I Selecting a weather channel (U.S.A. play . q Push...
... digit is open. I Setting a squelch level ï Using keypad The transceiver has a noise squelch circuit to select the 3 number or WX CH number appears on the function dis- Push again to frequency mode. • To select the 1 MHz tuning step, push , then rotate [DIAL]. q Push [SQL•WX-ALERT], then rotate [DIAL] to mute undesired 2 q Push [PWR] for 2 sec. play . 3 BASIC OPERATION I Setting a frequency I Selecting a weather channel (U.S.A. play . q Push...
Instruction Manual
Page 14
... while receiving. • Push [ANL•SCAN] to turn the power ON. q Set the desired frequency in COM band using [DIAL] or keypad. t Set the desired frequency using [DIAL] or keypad. • COM band frequency range: 118.00-136.975 MHz w Push and hold the transceiver too close to adjust the audio level. I Transmitting CAUTION: Transmitting without an antenna may damage the transceiver. r Push [SQL•WX-ALERT], then rotate [DIAL] clockwise until the channel is...
... while receiving. • Push [ANL•SCAN] to turn the power ON. q Set the desired frequency in COM band using [DIAL] or keypad. t Set the desired frequency using [DIAL] or keypad. • COM band frequency range: 118.00-136.975 MHz w Push and hold the transceiver too close to adjust the audio level. I Transmitting CAUTION: Transmitting without an antenna may damage the transceiver. r Push [SQL•WX-ALERT], then rotate [DIAL] clockwise until the channel is...
Instruction Manual
Page 15
... battery pack requires recharging. I Low battery indicator Low battery indicator appears Low battery indicator when the battery power has decreased to delete it . • Replaces the selected channel into the previous channel when push , then . • Replaces the selected channel into "r1". Appears recall number. • Recall number rotation : Push : Push NOTE: Deletes in order of old recall channel automatically when stored frequencies exceeds 10 channels. 10 D Calling the stored frequencies...
... battery pack requires recharging. I Low battery indicator Low battery indicator appears Low battery indicator when the battery power has decreased to delete it . • Replaces the selected channel into the previous channel when push , then . • Replaces the selected channel into "r1". Appears recall number. • Recall number rotation : Push : Push NOTE: Deletes in order of old recall channel automatically when stored frequencies exceeds 10 channels. 10 D Calling the stored frequencies...
Instruction Manual
Page 16
...-A24 and IC-A6 can quickly gain access to enter the beep tone setting mode. q Push [121.5] for monitoring. q Push , then push [8•BEEP] to the 121.5 MHz emergency frequency. level. I Accessing 121.5 MHz emergency frequency When using this function (OPC-499 HEADSET ADAPTER and headset are required). (p. 34) D Setting the side tone level q Push [PTT] to set mode. I Side tone function An NOAA broadcast station transmits a weather alert tone be- w Rotate [DIAL] to turn the function...
...-A24 and IC-A6 can quickly gain access to enter the beep tone setting mode. q Push [121.5] for monitoring. q Push , then push [8•BEEP] to the 121.5 MHz emergency frequency. level. I Accessing 121.5 MHz emergency frequency When using this function (OPC-499 HEADSET ADAPTER and headset are required). (p. 34) D Setting the side tone level q Push [PTT] to set mode. I Side tone function An NOAA broadcast station transmits a weather alert tone be- w Rotate [DIAL] to turn the function...
Instruction Manual
Page 18
... numbers are blinks. e Push , then push [MR•MW] to program the contents into the channel and return to select the frequency mode, if necessary. version only. • EXAMPLE: Programming WX-05* into memory BANK 3/ memory channel 9. 4 MEMORY OPERATION I Programming a memory channel The transceiver has 200 (20 CH. × 10 BANK) memory channels for storage of often-used frequencies. q Push [CLR•DEL] to the frequency mode. *Weather channel...
... numbers are blinks. e Push , then push [MR•MW] to program the contents into the channel and return to select the frequency mode, if necessary. version only. • EXAMPLE: Programming WX-05* into memory BANK 3/ memory channel 9. 4 MEMORY OPERATION I Programming a memory channel The transceiver has 200 (20 CH. × 10 BANK) memory channels for storage of often-used frequencies. q Push [CLR•DEL] to the frequency mode. *Weather channel...
Instruction Manual
Page 21
... received, the scan pauses until it disappears. • To change the scanning direction, rotate [DIAL]. w Push [SQL•WX-ALERT] to set the squelch level to start the scan. 4 108.00 118.00 MHz MHz Repeatedly scans 136.975 MHz all over frequencies the entire • When a signal is just muted. Weather channels are available for checking often-used channels and bypassing usually busy channels such as control-tower frequencies. 5 SCAN OPERATION I Scan types I Memory scan...
... received, the scan pauses until it disappears. • To change the scanning direction, rotate [DIAL]. w Push [SQL•WX-ALERT] to set the squelch level to start the scan. 4 108.00 118.00 MHz MHz Repeatedly scans 136.975 MHz all over frequencies the entire • When a signal is just muted. Weather channels are available for checking often-used channels and bypassing usually busy channels such as control-tower frequencies. 5 SCAN OPERATION I Scan types I Memory scan...
Instruction Manual
Page 25
... accurate (primary) VOR/CDI or landing service equipment. 20 To set correctly at a localizer signal is received. Each arrow represents a two-degree deviation. lect the 'FROM' flag when flying away from the VOR station. 'loc' appears on your aircraft is not set the operating frequency, select the DVOR mode in advance. t Push , then push [1•...
... accurate (primary) VOR/CDI or landing service equipment. 20 To set correctly at a localizer signal is received. Each arrow represents a two-degree deviation. lect the 'FROM' flag when flying away from the VOR station. 'loc' appears on your aircraft is not set the operating frequency, select the DVOR mode in advance. t Push , then push [1•...
Instruction Manual
Page 29
... service station using the tun- 6 VOR NAVIGATION (IC-A24 ONLY) I Duplex operation (U.S.A. version only) D Operating the duplex function q Set the desired frequency in NAV band. • NAV band frequency range: 108.00-117.975 MHz The duplex function allows you to cancel the function. NOTE: A duplex frequency can also be programmed into a memory channel. • The displayed frequency returns to transmit at the pre-programmed transmit frequency. EXAMPLE: Programming 123.65 MHz...
... service station using the tun- 6 VOR NAVIGATION (IC-A24 ONLY) I Duplex operation (U.S.A. version only) D Operating the duplex function q Set the desired frequency in NAV band. • NAV band frequency range: 108.00-117.975 MHz The duplex function allows you to cancel the function. NOTE: A duplex frequency can also be programmed into a memory channel. • The displayed frequency returns to transmit at the pre-programmed transmit frequency. EXAMPLE: Programming 123.65 MHz...
Instruction Manual
Page 30
... charged for optimum life and operation. NEVER short the terminals of the battery pack. rent may result in handbags, etc. Therefore, be purchased. Then, fully charge the battery pack again. CAUTION: To avoid damage to the transceiver, turn the power OFF while charging. • Recommended temperature range for charging: +10°C to +40°C (+50°F to the transceiver when installing Alkaline batteries. CAUTION! The charger...
... charged for optimum life and operation. NEVER short the terminals of the battery pack. rent may result in handbags, etc. Therefore, be purchased. Then, fully charge the battery pack again. CAUTION: To avoid damage to the transceiver, turn the power OFF while charging. • Recommended temperature range for charging: +10°C to +40°C (+50°F to the transceiver when installing Alkaline batteries. CAUTION! The charger...
Instruction Manual
Page 34
... the battery pack. • Recharge the battery pack. pgs. 7, • Check the connection to a suitable level. p. 11 Scan does not start. • All memory channels are receive only. • The battery is exhausted. • Change channels. • Recharge the battery pack. p. 17 No beep sounds. • Beep tones turned OFF. • Push , then push [8•BEEP] to adjust p. 11 the beep tone level 29 9 TROUBLESHOOTING If your transceiver seems to be selected. • Lock...
... the battery pack. • Recharge the battery pack. pgs. 7, • Check the connection to a suitable level. p. 11 Scan does not start. • All memory channels are receive only. • The battery is exhausted. • Change channels. • Recharge the battery pack. p. 17 No beep sounds. • Beep tones turned OFF. • Push , then push [8•BEEP] to adjust p. 11 the beep tone level 29 9 TROUBLESHOOTING If your transceiver seems to be selected. • Lock...
Instruction Manual
Page 35
...fied battery packs/case or • Output power • Modulation • Modulation limiting • Audio harmonic distortion • Hum and noise ratio • Spurious emissions • Microphone connector : 5 W (PEP) typical 1.5 W (CW) typical : Low level modulation : 70 to change without notice or obligation. • External SP connector : 3-conductor 3.5 (d) mm (1/8˝)/8 Ω 30 10 SPECIFICATIONS D General D Transmitter • Frequency coverage (MHz): TX...
...fied battery packs/case or • Output power • Modulation • Modulation limiting • Audio harmonic distortion • Hum and noise ratio • Spurious emissions • Microphone connector : 5 W (PEP) typical 1.5 W (CW) typical : Low level modulation : 70 to change without notice or obligation. • External SP connector : 3-conductor 3.5 (d) mm (1/8˝)/8 Ω 30 10 SPECIFICATIONS D General D Transmitter • Frequency coverage (MHz): TX...
Instruction Manual
Page 36
...; OPC-656 DC POWER CABLE FOR BC-121N WITH DC Charges the battery pack using an optional headset, such as those from scratches, etc. D BELT CLIPS • MB-103 BELT CLIP The same as supplied with the transceiver. •BC-119N DESKTOP CHARGER + AD-101 CHARGER ADAPTER + BC-145 AC ADAPTER For rapid charging of the AC adapter for BC-121N. via the adapter, the transceiver outputs your authorized dealer...
...; OPC-656 DC POWER CABLE FOR BC-121N WITH DC Charges the battery pack using an optional headset, such as those from scratches, etc. D BELT CLIPS • MB-103 BELT CLIP The same as supplied with the transceiver. •BC-119N DESKTOP CHARGER + AD-101 CHARGER ADAPTER + BC-145 AC ADAPTER For rapid charging of the AC adapter for BC-121N. via the adapter, the transceiver outputs your authorized dealer...