【Feature】Frequency Range: 27MHz；MAX Power: 20W；Connector Type: BNC Male;Impedance: 50ohm; S.W.R:<1.5; Length:9’’-51’’ Telescopic 【Telescopic antenna】Roniware Retractable/Rod CB Radio Antenna unstretched Length: Approximately 9 inches (23 centimeters), with a total length of only 51 inches/130 centimeters. It is portable and easy to carry and replace. 【 Strong compatibility 】 Compatible with most handheld CB radios such as Cobr, Midland, Uniden, Macon, and Radio Shack with BNC connectors. Suitable for other 27MHZ CB radios. Using this antenna can improve the reception performance of CB radios. 【 Compatible With CB Radio Model】Midland:75-822 75-785 MHS75 7W44;Cobra HH50WXST HH50 MRHH350FLT C75WXST HHRT50；Uniden: BC75XLT PRO401HH PRO501HH BC125AT;Maxon HCB-10C.If your radio model is not compatible, please refer to our other products. 【What you get】Package contains antenna X1. Easy to operate, suitable for novices, and provide technical guidance. All day customer service replies to ensure your purchase enjoyment.