What connector type does the headset jack use? Shawn February 22, 2017 19:48 The SR-89MC uses a 2 pin Kenwood Style jack. It's used in many VHF and UHF handheld radios. Related articles How do I change the power from Hi to Low? Do you loose any distance or transmitting area on the SR-89MC Amateur Radio when using both the Noise Blanker & Automatic Noise Limiter? I just wanted to know if the SR-89MC has an internal SWR Comments 0 comments Article is closed for comments.