SIRIO SB 3 U - VHF 3/4 wave marine antenna

VHF 3/4 Wave J-pole Marine Antenna. Encapsulated in high-quality fiberglass. Designed to operate without a ground plane. No adjustment required. Mast-mounted. The included M1 bracket allows for mounting at the top of the mast or screwing to the cabin. Length 1.46 m. ​​Female PL (SO239) connector at the base. Cable not included. DC-Ground protection (electrically shorted DC): all metal parts are short-circuited to reduce static noise and electrical discharges. Gain 4.15 dBi above the standard 1/4 Wave antenna.

Type: VHF Marine Fiber Antenna 1/2 J-Pole with Loading Coil

Radiation: Omnidirectional

Polarization: Linear Vertical

Impedance: 50 Ohms

E-Plane Radiation Angle: Beamwidth @ -3dB = 39º

H-Plane Radiation Angle: 360º

Declination Angle: 21º

Ground Plane: Not Required

Bandwidth A: TX: 4 MHz @ SWR < 2

Frequency Range A: TX: 155 - 159,000 MHz

Compatible Systems: VHF Marine Band

Gain Range A: 4.15 dBi Ref. Lambda 1/4

Applicable Power A: 100 Watts

DC Protection: Short-circuited to ground

Cable/Length/Connector: Not applicable

Connector A: Female PL

Color: White

Body: Fiberglass

Materials: Chrome-plated brass, fiberglass, nylon

Bracket: M-1 included

Dimensions L: 1.46 m

Protection Rating: IP66

VHF Marine: Yes

AIS-162MHz: No