Sirio GP365-470C

A top quality 1/4 wave + 1/ 2wave colinear UHF Ground Plane base antenna suitable for Amateur and Land Mobile frequencies within the 365 - 470 MHz band tunable by cutting.

The main whip and the radials are made of 17/7 PH stainless steel and its base is of chromed brass to get the best robustness. It is supplied with stainless steel hardware and radials and is equipped with an anodized aluminium bracket for an easy side mast installation.

Features:

• Base station antenna, Omnidirectional
• Medium-gain, Mono-band
• Tuneable by whip cutting
• Made of anodized aluminium alloy
• Stainless steel hardware and radials
• Equipped with anodized aluminium bracket for an easy side mast installation
• 17/7 PH stainless steel spring whip
• Supplied with nylon reinforce part inside the spring whip

Specifications:

• Type: 1/4λ + 1/2λ colinear
• Frequency Range: Tunable 365 - 470MHz
• Impedance: 50Ω
• Radiation (H-plane): 360° omnidirectional
• Radiation (E-plane): beamwidth @ -3 dB = 53°
• Radiation angle: 0° * Polarization: Linear Vertical
• Gain: 2.5dBd - 4.65dBi
• Max. power (CW) @30°C: 150 Watts
• Connector: N-female, gold plated central pin

Mechanical Specifications:

• Materials: Aluminium, Brass, Stainless Steel 17/7 PH
• Wind Load / Resistance: 18 N @ 150 Km/h / 180 Km/h
• Wind Surface: 0.02m²
• Height (approx.): 990mm
• Weight (approx.): 730gr
• Radial Length (approx.): 200mm
• Mounting Mast: Ø 35-54 mm