This is compatible for use with Kenwood PTT models: TK-2100(Pro Talk) / 2102(Pro Talk) / 2130(Pro Talk) / 2160 TK-3100(Pro Talk) / 3101(Free Talk XL) / 3102(Pro Power) TK-3130(Pro Talk XLS) / 3131(Free Talk XLS) / 3160 TK-208 / 220 / 240 / 240D / 248 / 250 / 260 / 260G / 270 / 270G / 308 / 320 TK-340 / 340D / 348 / 350 / 353 / 360 / 360G / 370 / 370G / 372G / 430 / 431 / 278 / 378??
Compatible for use with Motorola PTT models (2 pins): CP100 / CP150/ CP200 / CT150 / CT250 / CT450 / CT450LS / GP68 / GP88 / GP280 / GP280XL / GP300 / GP308 / GP2000 / GTI / GTX / LTS2000 / P040 / P080 / P100 / P110 / P200 / P1225 / P1225LS / PR400 / PRO3150 / SP10 / SP21 / SP50 / XTN446 / XTN500 / XTN600??
Compatible for use with I-COM U94 PTT models: IC-F3 / IC-F3G / IC-F3GS / IC-F3S / IC-F4 / IC-F4G / IC-F4GS / IC-F4S / IC-F11 / IC-F21 / IC-F31 / IC-H2 / IC-H6 / IC-J12 / IC-M5 / ICU12 / IC-U16 / IC-A5 (Yaesu CT-44 Connector) / IC-Q7 (Yaesu CT-44 Connector).
Compatible for use with STANDARD U94 PTT models: HX24 / HX32 / HX482 / HX581 / HX583 / C150 / C160 / C450 / C460.