Antenna COALAS::YAGI-140-180stem YAGI.140-180

Antenna COALAS::YAGI.140-180

COALAS::YAGI.140-180 from Coalas systems is a directional Yagi antenna designed for ground stations and professional VHF applications. Its design ensures reliable operation in both field and stationary conditions, providing stable reception and transmission at frequencies typical for radio communication, monitoring, and amateur systems.

Description and Purpose

The antenna is designed for effective directional operation in the 143 MHz - 177 MHz frequency band with a guaranteed VSWR < 1.5 within the operating range. The resonant frequency is 157 MHz (VSWR = 1.22), which minimizes reflections and optimizes power transmission. The input impedance is 50 Ohms, allowing seamless integration with typical radio equipment and modern transceivers.

Technical Specifications

• Band: 143 MHz - 177 MHz (VSWR < 1.5)
• Resonant Frequency: 157 MHz (VSWR = 1.22)
• Input Impedance: 50 Ohms
• Max Power: 15 W
• Gain: 8 dBi
• Beamwidth: horizontal - 60°, vertical - 60°
• Connector: SMA Male + RG316 cable (900 mm)
• Dimensions: 1080 x 1020 mm (unfolded), 1080 x 150 mm (folded)
• Weight: 500 g
• Mast Mount: ⌀30-60 mm
• DIN Rail Mount

Its compact folded dimensions and 500g weight make the antenna convenient for transport, field operations, and quick installation. The 30-60 mm mast mount ensures easy setup on standard masts, while the DIN rail mount allows integration into industrial and laboratory systems.

Advantages

• Stable 8 dBi gain for directional signal enhancement.
• Wide operating range of 143-177 MHz with low VSWR for quality communication.
• Ready to connect: includes SMA Male and 900 mm RG316 cable.
• Versatile mounting options: mast and DIN rail provide installation flexibility.
• Lightweight and portable design, convenient for field and stationary applications.

The COALAS::YAGI.140-180 antenna is ideal for ground stations, radio operators, monitoring, and other VHF applications where compactness, ease of installation, and signal quality are important. All technical parameters match the description and guarantee compatibility with most 50-Ohm receivers and transmitters.

Other products in this category here Yagi Antennas

Yagi Antennas by Coalas Systems, Yagi Antennas 1-1000 MHz, Yagi Antennas with 7-9 dBi Gain