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Icom Ic-A4 Vhf Air Band Transceiver Instruction Manual

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    							17
    10
    SPECIFICATIONS
    DGeneral•Frequency coverage : TX 118 to 136.975 MHz
    RX 108 to 136.975 MHz
    •Mode : AM (6K00A3E)
    •Number of memory channels : 19
    •Acceptable power supply : 9.6 V DC nominal
    (negative ground) (authorized battery packs)
    •Usable temp. range : –10˚C to +50˚C
    •Frequency stability : ±10 ppm (0˚C to +50˚C)
    •Current drain  :
    Tx 1.2 A (CW)  max.
    0.7 A (CW)  typical
    Rx 55 mA typical (at stand by)
    250 mA max. (at AF max.)
    •Antenna impedance : 50 Ω(nominal)
    •Dimensions : 58(W)✕140.5(H)✕32.3(D) mm
    (projections not incl.)
    •Weight (with BP-195) : 425 g
    DTransmitter•Output power : 3.7 W  (PEP)  typical
    1.0 W  (CW) typical
    •Modulation : Low level modulation
    •Modulation limiting : 80 to 100 %
    •Audio harmonic distortion : Less than 10 % 
    (at 60 % modulation)
    •Hum and noise ratio : More than 35 dB
    •Spurious emissions : More than 60 dBDReceiver•Receive system : Double conversion
    superheterodyne
    •Intermediate frequencies : 1st 28.95 MHz
    2nd 450 kHz
    •Sensitivity (with 50 Ωload) : 1 µV (at AM  6dB S/N)
    •Squelch sensitivity : 1 µV 
    (with 50 Ωload)
    •Selectivity : 8 kHz (at 6 dB)
    25 kHz (at 60 dB)
    •Spurious response : More than 60 dB 
    •Audio output power : 500 mW (at 10% distortion
    (at 9.6 V DC) with an 8 Ωload)
    •Noise and hum : More than 25 dB
    •External SP connector : 3-conductor 3.5 (d) mm/8 Ω
    All stated specifications are subject to change without
    notice or obligation.
    IC-A4#01 IM  01.12.5 5:14 PM  Page 17 (1,1) 
    						
    							18
    11
    OPTIONS
    DBattery packs1Operating periods are calibrated for the following conditions:
    at 25°C (77°F), Tx (high power) : Rx : standby = 5 : 5 : 90
    *2When Ni-Cd batteries are installed.DOther optionsBC-110A/D/V
    WALL CHARGER
    Used for regular charging of the connected battery pack.
    BC-119
    DESKTOP CHARGER 
    + AD-81
    CHARGER ADAPTOR
    For rapid charging of battery packs. An AC adapter is sup-
    plied with the charger. Some BC-119 versions require the AD-
    75 additionally. Charging time: 1.5 to 2 hrs.
    BC-121
    MULTI-CHARGER
    + AD-81
    CHARGER ADAPTOR
    For rapid charging up to 6 battery packs simultaneously. An
    AC adapter may be supplied depending on version. Six AD-
    81’s are necessary. Charging time: 1.5 to 2 hrs.OPC-254L
    DC POWER CABLE
    CP-12L
    CIGARETTE LIGHTER CABLE WITH NOISE FILTER
    Allows you to charge a battery pack connected to the trans-
    ceiver via a DC power source (12–16 V DC) For charging
    ONLY—the transceiver cannot be simultaneously operated.
    HM-119 
    SPEAKER MICROPHONE
    Combination speaker and microphone.
    SP-13
    EARPHONE
    Provides clear audio in noisy environments.
    OPC-752
    HEADSET ADAPTER
    When using an optional headset, such as those from the
    David Clark Co. via the adapter
    , the transceiver outputs your
    transmitted voice to the headset for monitoring. (p. 19)
    EX-2119
    FIELD PROGRAMMING SOFTWARE
    Provides quick and easy programming of items, including pri-
    vate channels, scan settings, etc., via an IBM
    ®compatible PC
    to transceiver.
    OPC-474
    CLONING CABLE
    Cloning cable for transceiver to transceiver.OPC-478
    CLONING CABLE
    Cloning cable for PC to transceiver.IBM
    ®is a registered trademark of International Business Machines.
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    * d o i r e p1
    l l a W
    r e g r a h c
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    1 2 1 - C B
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    4 9 1 - P BA A r o f e s a c y r e t t a B
    ) 6 R (×r o e n i l a k l a 8
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    IC-A4#01 IM  01.12.5 5:14 PM  Page 18 (1,1) 
    						
    							OPTIONS
    19
    11
    DOPC-752(
    HEADSET ADAPTER) 
    connection
    When using an optional headset, such as those from the
    David Clark Co. via the adapter
    , the transceiver outputs your
    transmitted voice to the headset for monitoring. (pgs. 6, 11)
    PTT switch
    Use a PTT switch
    with a 3.5 mm diame-
    ter plug, if required.HEADSET
    (Must be purchased
    separately.)
    Clip the cable to the
    handstrap loop on
    the beltclip for sup-
    port.
    OPC-752
    IC-A4
    PTT
    IC-A4#01 IM  01.12.5 5:14 PM  Page 19 (1,1) 
    						
    							Count on us!
    6-9-16 Kamihigashi, Hirano-ku, Osaka 547 Japan
    A-5490H-1US
    Printed in Japan
    Copyright 1997 Icom Inc.
    IC-A4#01 IM  01.12.5 5:38 PM  Page 21 (1,1) 
    						
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