IC-A3 Specifications
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H.M.S. Communications, Inc.




  • Frequency Coverage:
    Tx/Rx: 118-136.975 MHz
    Rx: 161.65-163.275 MHz (weather channels)
  • Mode:
    Tx/Rx: AM (6K00AE3)
    Rx: FM (16K0G3E)
  • Channel spacing: 25 kHz
  • Current drain (at 12 V DC, typical):
    Tx: 1.0 A
    Rx (rated audio): 240 mA; Rx (squelched): 55 mA
  • Useable Temperature Range: -10C to +50C; -14F to +122F
  • Frequency stability: 20 ppm (-10C to +50C)
  • Intermediate frequencies: 1st 35.8 MHz; 2nd 455 kHz
  • Dimensions (projections not included): 57(W) x 170.5(H) x 37.5(D) mm; 2.25(W) x 6.72(H) x 1.48(D) in
  • Weight (with CM-166 and antenna): 465 g; 16.4 oz


  • Output power: 5.0 W (PEP); 1.5 W (carrier)
  • Modulation system: Low level modulation
  • Spurious emissions: Less than -60 dB


  • Sensitivity (for 6 dB S/N): Less than 1.0 V
  • Squelch sensitivity (threshold): Less than 1.0 V
  • Selectivity: More than 8 kHz/-6 dB; Less than 25 kHz/-60 dB
  • Noise and hum: More than 25 dB
  • Spurious response rejection ratio: More than 60 dB
  • Audio output power: 600 mW with an 8 ohm load


  • BC-79 + AD-50 DESKTOP CHARGER + DESKTOP CHARGER ADAPTER: Rapidly charge the CM-166 in approx. 1.5 hrs. An AC adapter is packed with BC-79. The optional CP-13/L or OPC-288/L can be used instead of the supplied AC adapter.
  • BM-112U/E WALL CHARGER: Rapidly charges the CM-80 or CM-92 in 1 hr. and the CM-97 in 3 hrs.
  • CM-166 BATTERY PACK: Voltage: 12 V; Capacity: 600 mAh. NiCd rechargeable battery pack provides 5 hours of operation (at a duty cycle of 5:5:90/Tx:Rx:standby). Same as supplied with the transceiver.
  • CM-167 BATTERY CASE: Holds R6(AA) x ten alkaline batteries.
  • CP-17L CIGARETTE LIGHTER CABLE: For operation and charging with a 12 V cigarette lighter socket.
  • OPC-515L DC POWER CABLE: For operation and charging with a 12-15 V DC power supply.
  • LC-122 CARRYING CASE: Fits the transceiver with the supplied CM-166.
  • OPC-499 HEADSET ADAPTER CABLE: Allows you to connect a headset from the David Clark Co. Provides the side tone function. Same as supplied.

The ICOM logo is a registered trademark of ICOM, Inc. All ICOM radios significantly exceed FCC regulations limiting spurious emissions. All stated specifications are subject to change without notice or obligation.

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Copyright 1999 Donegal Holdings Ltd., Inc.
Last modified: May 15, 2006