The Sirio SB 1 S is a compact, 1/2λ VHF marine band antenna engineered in Italy for professional and leisure marine communications. With 100W CW power handling, a TX range of 156–157.425 MHz at SWR ≤1.5, and a receive range of 156–162 MHz at SWR ≤2, it covers the full VHF Marine Band with no tuning required. Supplied with the M-1 bracket for on-mast or on-wall mounting, it's a versatile and easy-to-install solution for any vessel. Standing at 955mm (3.13ft) and constructed from chromed brass, stainless steel 17/7 PH, fibreglass, and nylon for corrosion-resistant marine durability. SO-239 connector for direct connection to your VHF radio. Key Features 100W CW power handling TX: 156–157.425 MHz @ SWR ≤1.5 RX: 156–162 MHz @ SWR ≤2 Gain: 0 dBd / 2.15 dBi Omnidirectional radiation pattern Linear vertical polarisation 1/2λ design for reliable marine VHF performance M-1 bracket included — on-mast or on-wall mounting SO-239 (UHF-Female) connector Height: 955mm / 3.13ft Corrosion-resistant materials: chromed brass, stainless steel 17/7 PH, fibreglass & nylon Made in Italy by Sirio Technical Specifications Type: 1/2λ VHF marine antenna Radiation: Omnidirectional Polarisation: Linear vertical TX frequency range: 156–157.425 MHz @ SWR ≤1.5 RX frequency range: 156–162 MHz @ SWR ≤2 Systems: VHF Marine Band Gain: 0 dBd / 2.15 dBi Max power: 100W CW Connector: SO-239 (UHF-Female) Height: 955mm / 3.13ft Mounting: On-mast / on-wall (M-1 bracket included) Materials: Chromed brass, stainless steel 17/7 PH, fibreglass, nylon Country of origin: Italy
