Sirio SB 3 M Marine VHF Antenna with M-8 Bracket 2dBd Gain, 100W, No Tuning, 155.5-160MHz

The Sirio SB 3 M Marine is a high-gain, 3/4λ J-pole VHF marine band antenna engineered in Italy for professional and leisure marine communications. Covering 155.5–160 MHz with no tuning required, it delivers 2 dBd (4.15 dBi) gain and 100W CW power handling — giving you a clear, reliable signal on the water. Supplied with a 5m low-loss coax cable and the M-8 marine bracket for thru-hole mounting, it's ready to install straight out of the box. Standing at 1480mm (4.86ft) and constructed from chromed brass, fibreglass, and nylon for corrosion-resistant marine durability.

Key Features

• 100W CW power handling
• VHF Marine Band coverage: 155.5–160 MHz — no tuning required
• Gain: 2 dBd / 4.15 dBi
• Omnidirectional radiation pattern
• Linear vertical polarisation
• 3/4λ J-pole design for superior gain
• M-8 marine bracket included
• Supplied with 5m low-loss coax cable
• Thru-hole mounting
• Height: 1480mm / 4.86ft
• Corrosion-resistant materials: chromed brass, fibreglass & nylon
• Made in Italy by Sirio

Technical Specifications

• Type: 3/4λ J-pole VHF marine antenna
• Radiation: Omnidirectional
• Polarisation: Linear vertical
• Frequency range: 155.5–160 MHz (no tuning required)
• Systems: VHF Marine Band
• Gain: 2 dBd / 4.15 dBi
• Max power: 100W CW
• Cable: 5m low-loss coax
• Connector: Not supplied (bare cable end)
• Height: 1480mm / 4.86ft
• Mounting: Thru-hole (M-8 bracket included)
• Materials: Chromed brass, fibreglass, nylon
• Country of origin: Italy