One Plug Filter Collins Mechanical 500Hz CW for the Icom IC-718
This 500-Hz CW filter uses factory fresh Collins Mechanical Filters. Rather than the ICOM optional crystal, you can now have the excellent Collins filter. This filter allows the IC-718 radios to perform nicely in the CW modes, and is properly terminated for best performance in your radio. Available for you to install or to have radioworld install for you.