Sirio SB 1 S Marine VHF Antenna with M-1 Bracket 100W, 0dBd Gain, TX 156-157.425MHz, RX 156-162MHz

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