Sirio GPA 66-108Mhz ground plane base antenna

font color=blue size=2> Sirio GPA 66-108 is 1/4 λ VHF base antenna for professional and HAM 4m bands 66MHz - 108MHz. Manufactured from robust aluminim alloy and weather proof plastics. High quality materials garrantee maximum effectivеness and long term exploitation.

Sirio GPA 66-108 - VHF antenna type groundplane for base station applications in frequency range 66MHz - 108MHz tunable base antenna.

Features:

Base station antenna, Mono-band

Omnidirectional, Unity gain

Made of aluminium alloy 6063 T-832

Perfect protection against the worst weather conditions

Tunable by whip length adjusting

Side mast mounting allowed by optional bracket FT-2 code 2510004.00

Electrical Data

Type: 1/4λ ground plane large band

Frequency range: GPA 66-108: tunable 66...108 MHz

Impedance: 50Ω

Radiation (H-plane): 360° omnidirectional

Radiation (E-plane): beamwidth @ -3 dB = 86°

Radiation angle: 0°

Polarization: linear vertical

Gain: 0 dBd - 2.15 dBi

Bandwidth @ SWR ≤2: 6.5 MHz at 66 MHz

SWR @ res. freq.: ≤ 1.2 @ start freq.

Max. Power (CW) @ 30°C: GPA 66-108: 500 Watts

Connector: UHF-female

Mechanical Data

Materials: Aluminium, Chromed brass, Nylon

Wind load / resistance: 54 N at 150 Km/h / 150 Km/h

Wind surface: 0.05 m²

Height (approx.): 1930 mm

Weight (approx.): 700 gr

Mounting mast: Ø 35-40 mm