Diamond A144S5R2 2m Yagi Antenna 5 Element, 9.1dBi Gain, 144-146MHz, 50W, SO-239, Compact 0.95m Boom

The Diamond A144S5R2 is a compact, high-gain 5-element Yagi directional antenna for the 2-metre amateur radio band (144–146 MHz). With 9.1 dBi gain and a front-to-back ratio of >14 dB, it delivers excellent directional performance for DX work, satellite operation, and weak signal 2m contacts — all from a short 0.95m boom that's easy to handle, transport, and install. Factory pre-adjusted with no tuning required. A great entry point into directional 2m operation, or an ideal second antenna for portable and SOTA/POTA use where the 10-element A144S10R would be too large. Connects via SO-239 (UHF-Female) and handles 50W.

Key Features

• 9.1 dBi gain
• 5 elements
• Front-to-back ratio: >14 dB
• Frequency: 144–146 MHz (2m amateur band)
• 50W power handling
• VSWR: <1.3:1 typical
• Factory pre-adjusted — no tuning required
• Compact 0.95m boom — easy to handle, transport & install
• SO-239 (UHF-Female) connector
• Ideal for DX, satellite, SOTA/POTA & portable 2m operation
• Made by Diamond Antenna (Japan)

Technical Specifications

• Type: 5-element Yagi directional antenna
• Frequency: 144–146 MHz
• Gain: 9.1 dBi
• Elements: 5
• Front-to-back ratio: >14 dB
• Max power: 50W
• Impedance: 50Ω
• VSWR: <1.3:1 typical
• Connector: SO-239 (UHF-Female)
• Boom length: 0.95m
• Country of origin: Japan