CQ-BG8LTU I recently tried replacing the car's internal microphone cable with an eight-core network cable, and it works perfectly. The XieGu handheld radio is also an 8-core one; I'll test it later.
BD7PPA It seems like there is no twisted pair cable, and it can only connect to the computer for 10 megabit internet access.
BI2QGR Just use a network cable, and my cable was also broken. Replacing it with a network cable worked fine. I also took apart my broken cable and found that it was actually an eight-core twisted pair cable without the steel wire spring.
bh1cqz I can buy a crimping tool and some 8-core crystal connectors myself, and do it without any trouble.