Trademark: CXD Product Description Adapter has integrated Push To Talk (PTT). Built to receive 3. 5mm threaded plug Adaptor for EF Johnson Radios, Motorola GP900, GP9000, HT1000, JT1000, MTS2000, MT2000, MTX838, MTC900, MTX9000, MTX960, MTX-LS, XTS2500, XTS3000, XTS3500, XTS5000 We carries a full line of adaptors for all radio applications and brands, including Vertex, Motorola, Icom, EF Johnson, Maxon and Kenwood Radios. Please contact us for the right adaptor for your needs.