Antenna
Same as supplied with the transceiver. For IC-A4, A5, A6, A14, A14S, A23, A24, and A25 radios.
Connector Type: BNC
Length: 20 cm (7.8 inches)
Note: It is not clear to me whether or not handheld radio antennas are interchangeable.  The reason I wonder is because I have had a variety of handheld radios standing next to each other on a table.  It was interesting to me that although the radio units were of different heights and the antennas were of different lengths, the overall heights of the radio and antenna together were all about the same.  That made me suspect that the overall antenna length includes antenna sections both inside the radio itself, and the external antenna.  My suspicion is enhanced by the fact that a 1/4 wave aircraft radio antenna from Larsen is 22 7/16 inches (570 mm) long.  However, I also suspect that this ICOM antenna would be a good substitute for any other handheld radio antenna with BNC connectors that is about the same length.  I am not an expert on radio antennas.