Description: Telescopic Ham Radio Antenna, High Quality, High Gain with Low SWR. Performs best on 136-174mHz, retractable and extendable, more convenient for you bring outside and boost up your Ham Radio. Frequency: 136-174mHz, Handheld Radio Antenna, best for VHF walkie talkie(please check your radio ’s frequency before purchase). Gain: 3.0dBi, Max power: 50W. Made of good stainless steel material and has been proven to provide excellent performance,retracted antenna is 20cm and full extended up to 106cm , provide more clear communication for you. Connector type: SMA Female Built-in Spring inside the base, so the antenna is Anti-collision in some extent. Compatible with Baofeng YAESU/Vertex PUXING WouXun VHF two way radios. Specification: Frequency:136-174MHz Ham Radio Antenna Gain: 3.0dBi Max Power: 50W Package Includes: 1Piece SMA-Female Telescopic Antenna