The current production versions of the KX-155 will replace all previous versions. The -38, -39, -42, and -43 versions of the KX-155 include all of the previous features of the KX-155 and more. Please refer to the following chart for replacement reference:

069-1024-00     069-1024-38
069-1024-01     069-1024-42
069-1024-02     069-1024-38
069-1024-03     069-1024-42
069-1024-04     069-1024-39
069-1024-05     069-1024-43
069-1024-06     069-1024-39
069-1024-07     069-1024-43
069-1024-08     069-1024-38
069-1024-09     069-1024-39
069-1024-10     069-1024-38
069-1024-11     069-1024-39
069-1024-12     069-1024-42
069-1024-13     069-1024-43
069-1024-30     069-1024-38
069-1024-31     069-1024-42
069-1024-32     069-1024-38
069-1024-33     069-1024-42
069-1024-34     069-1024-39
069-1024-35     069-1024-43
069-1024-36     069-1024-39
069-1024-37     069-1024-43

Please note that the "50 kHz comm receiver selectivity" option is no longer available and no longer required in most parts of the world.

For more information on the individual part number features, please refer to the Part Number chart on the bottom of the KX-155 Product Page located on www.seaerospace.com