TWAYRDIO High Gain Yagi Antenna UHF 400-470MHz - Directional 9dBi

In this review the TWAYRDIO High Gain Yagi Antenna is evaluated for amateur radio operators, GMRS repeater users, and anyone needing a durable outdoor UHF directional antenna. The bottom line: it is a practical, well-built 9dBi yagi that meaningfully increases signal strength and range across the 400-470MHz band while staying lightweight and easy to assemble. The single biggest reason to buy is its combination of focused gain and sturdy outdoor construction that helps hit distant repeaters and improve reception for scanners and 433MHz devices.

Key Features

• UHF 400-470MHz coverage: Broad UHF bandwidth makes this antenna suitable for amateur radio, GMRS, scanner work and many data radio applications across the 400-470MHz range.
• 9dBi gain: The 9dBi gain at 430MHz delivers noticeably stronger forward signal and better reception for weak repeater links or distant contacts.
• Durable aluminum construction: Aluminum alloy elements and corrosion resistant finish keep the antenna bright, lightweight and weather resistant for outdoor mounting.
• Compact, lightweight design: At about 725mm by 280mm and 0.4kg the antenna is easy to handle and mount without heavy hardware.
• Secure mounting and wind rating: Comes with U-bracket mounting for 30-40mm poles and a rated wind velocity of 60 m/s for solid outdoor stability.

Who It's For

This antenna is best for hobbyists and field operators who need a directional, high gain solution for UHF 70cm band work, including users of Baofeng, Motorola, Yaesu and Kenwood radios, GMRS repeater installers, and scanner enthusiasts. Its lightweight build and straightforward assembly make it good for rooftop or mast mounting where focused coverage matters.

Those who need VHF-only coverage, omnidirectional reception, or integrated mast hardware beyond a 30-40mm U-bracket should look elsewhere. Also, if you require a pre-terminated N-type or SMA connector rather than the SL16/UHF female, plan to add an adapter or custom feedline.

Pros & Cons

Pros

• Good directional gain and front-to-back ratio help improve range and reduce off-axis noise.
• Sturdy aluminum alloy construction resists corrosion and stands up to outdoor conditions.
• Lightweight and easy to assemble, customers report quick setup and solid build quality.
• Reasonable size for 70cm applications while still delivering focused performance.

Cons

• Connector is SL16/UHF female, which may require an adapter for some radio setups.
• Included hardware uses standard screws that some users found to be a nonstandard size for replacements.

Specifications

Frequency	UHF 400-470MHz
Gain	9dBi (430MHz)
Maximum Power	100W
Connector	SL16/UHF female
Impedance	50 ohm
Size	725mm x 280mm
Rated Wind Velocity	60 m/s

Our Verdict

The TWAYRDIO 9dBi Yagi is a solid choice for users who need a compact, directional UHF antenna that improves reach to repeaters and enhances scanner reception. Its durable aluminum construction, easy assembly and focused performance make it good value for radio hobbyists and GMRS installers, provided you accept the SL16 connector or add a simple adapter.

Frequently Asked Questions

Does this antenna support GMRS and amateur 70cm use?
Yes; the 400-470MHz coverage and 9dBi gain make it suitable for GMRS repeaters and many 70cm amateur applications.

What connector does it use and will it fit my radio?
The antenna uses an SL16/UHF female connector; many radios need an adapter or coax with the correct mating connector for direct connection.

Is it durable for outdoor mounting?
Yes; the aluminum alloy construction is corrosion resistant, lightweight and rated to withstand strong winds with the supplied U-bracket.