Tram provides premium antenna components that provide functionality and durability of the antenna to deliver quality communication connections you depend on. Each antenna model is carefully planned and developed to ensure great transmission over many uses. The Tunable 144MHz-174MHz Tunable VHF 3dBd Gain Trunk or Hole Mount Antenna Kit with PL-259 Connector will offer premium service for many years to come. . Freq range: 144MHz-174MHz VHF NMO antenna . 3dBd gain - 5/8 wave . 51" tall black finish NMO mounting antenna with gold-plated plunger-type contact pin . Solid brass NMO mount with gold-plated brass contact pin & high-frequency, fully enclosed, fully shielded & fully weatherized zinc die-cast housing . 17ft RG58/U low loss premium coaxial cable with UHF male PL-259 connector installed . Stainless steel L-bracket with black finish for trunk groove or side mounting . Can be mounted in 3/4" hole