A custom cable made by Halibut Electronics to connect Yaesu Mobile Radios with a 6p6c (aka RJ12) microphone connector, to the HHI Radio Pro’s 8p8c (aka RJ45). Yaesu puts Mic+ and Mic- on two pins that are not normally a pair in a EIA-568b cable, so both ends of this cable are custom to make sure the microphone signal gets a pair.
While you can’t buy this custom cable elsewhere, you may have the tools on-hand to build it yourself. See Additional Information tab for the cable pinout. Otherwise, we sell them here for your convenience.