VHF base antenna GPA 135-175

Sirio GPA 135-175 is VHF base antenna for professional and HAM bands 135MHz - 175MHz. Manufactured from robust aluminim alloy and weather proof plastics. High quality materials garrantee maximum effectivеness and long term exploitation. Lengths must be alligned acording to the included frequency chart.

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Features:

- Base station antenna, Mono-band
- Omnidirectional, Unity gain
- Made of aluminium alloy 6063 T-832
- Tunable by whip length adjusting
- Side mast mounting allowed by optional bracket FT-2 code 2510004.00

Electrical Data:

- Type: 1/4 lambda ground plane
- Frequency range: tunable 135...175 MHz
- Impedance: 50ohm
- Radiation (H-plane): 360° omnidirectional
- Radiation (E-plane): beamwidth at -3 dB = 86°
- Radiation angle: 0°
- Polarization: linear vertical
- Gain: 0 dBd - 2.15 dBi
- Bandwidth @ SWR  GPA 135-175: >13 MHz @ 135 MHz
- SWR @ res. freq.: < 1.2 @ start freq.
- Max. Power (CW) @ 30°C:
 GPA 135-175: 300 Watts
- Connector: UHF-female

Mechanical Data

- Materials: Aluminium, Chromed brass, Nylon
- Wind load / resistance: 29 N at 150 Km/h / 180 Km/h
- Wind surface: 0.03 sq.m.
-    Height (approx.): 960 mm
- Weight (approx.): 520 gr
- Radial length (approx.):  520 mm
- Mounting mast: 35-40 mm