Cobra HA-TA Telescoping Antenna - Long Range 9"-27", Performance Boosting, Double Your Range, One Size, One Color DOUBLE YOUR RANGE - Extend to 27" for maximum call range and collapse to an easily stored 9 inches. Get the performance you need without mounting a permanent antenna. COMPATIBLE WITH ALL HAND HELD CB RADIOS  Use this antenna on all Hand Held CB radios from Cobra, Midland, Macon, and Radio Shack with a BNC Connector. Add range and quality to your CB reception. BOOST YOUR PERFORMANCE - Instantly double your range for receiving and transmitting calls when telescoped as compared to the stock rubber antenna. Make sure messages are heard when transmitting to and from your CB radio. DESIGNED FOR 26 - 27 MHz FREQUENCIES - For the best performance and highest call quality, operate on a channel within this frequency range