Sirio SB-27M boat antenna

The sirio SB-27M is a maritime 27MHz antenna with a center frequency of 27.185 MHz. This antenna from the well-known Italian quality brand Sirio does not require any mass and can therefore be mounted on various surfaces. The antenna rod of the SB-27M is made of fiberglass and is therefore resistant to many elements.

The antenna comes with an antenna base that you can easily mount in any desired location with the four supplied screws. This antenna base also has a tilt function, which is extremely useful. If you want to sail under a bridge with this, all you have to do is loosen the screw and tilt your antenna so that your antenna does not get damaged against the bottom of the bridge. The Sirio SB-27M is supplied with a 7 meter white RG58 cable ( Note! excl. PL259 connector). The length of the SB-27M is 2.60m and the antenna can handle a maximum power of 50Watt.

Features Sirio SB-27M maritime antenna

• CB 10m Marine antenna


• Designed to work without Ground Plane


• Perfect protection against the worst weather conditions


• Protection from static discharges DC-Ground


• Chrome-plated brass ferrule


• Stainless steel hardware


• High quality whip made of brass and copper protected by fiberglass tube


• Supplied with white coaxial cable RG-58 C/U directly connected


• Wide range of optional mounting bases

Technical specifications

• Type: CB base loaded


• Center Frequency: 27.185 MHz


• Impedance: 50Ω unbalanced


• Radiation (H-plane): 360° omnidirectional


• Polarization: vertical


• Bandwidth at SWR 2:1: 5600 KHz


• SWR at res. freq.: ≤ 1.2:1


• Max. power:


• 15 Watts (CW) continuous


• 50 Watts (CW) short time


• Feed system / Position: Transformer DC ground / base


• Cable type: RG58


• Standard mount: M-3 OT


• Materials: Copper, Glass fiber, Chromed brass


• Height (approx.): 2600 mm


• Weight (approx.): 860 gr

Package contents

• 1x Sirio SB-27M maritime antenna


• 1x Antenna holder


• 1x Set of mounting screws


• 1x Manual in multiple languages