Shakespeare 6225-R Phase III VHF Antenna - 8' VHF Marine Band 6dB Gain Silver-plated outer conductor, copper inner conductor Stainless steel mounting sleeve Type SO-239 connector inside mounting sleeve for easy mounting and dismounting for stowage Suggested Mount: Shakespeare 4187-HD Ratchet Mount 8' (2.4m) VHF Marine Band 6dB Gain