RFI YB820-81 20 Element UHF Yagi Antenna 803–896MHz

The RFI YB820-81 20 Element UHF Yagi Antenna is a high-gain directional antenna engineered for professional radio and wireless communications operating across the 803–896MHz frequency range. Designed for demanding fixed-site installations, it provides outstanding performance for long-distance point-to-point links, telemetry, SCADA, data radio, and specialised UHF communication systems.

Featuring a 20-element directional design, the YB820-81 delivers exceptional forward gain, excellent front-to-back ratio, and superior signal directivity. Constructed from high-quality aluminium with corrosion-resistant components, this antenna is built to provide years of reliable outdoor operation in commercial, industrial, and government communication networks.

Why Choose the RFI YB820-81?

The YB820-81 delivers exceptional directional performance where long-distance, high-reliability communications are essential.

Key Features

• Operates across the 803–896MHz UHF frequency range
• High-performance 20-element Yagi design
• High directional gain for extended communication range
• Lightweight, corrosion-resistant aluminium construction
• Excellent front-to-back ratio for reduced interference
• Narrow beamwidth for precise signal focus
• Suitable for analogue and digital radio systems
• Designed for permanent outdoor installation
• Low-maintenance construction
• Australian designed and manufactured

High-Gain Directional Performance

The 20-element design provides significantly higher gain than smaller directional antennas, allowing communications over greater distances with improved signal quality.

Benefits include:

• Extended communication range
• Increased signal strength
• Improved receive sensitivity
• Reduced interference
• Better network reliability
• Higher link efficiency

Its focused radiation pattern makes the YB820-81 ideal for applications requiring reliable long-distance communication.

Designed for Fixed Communication Networks

The YB820-81 is ideally suited to permanent infrastructure where dependable RF performance is critical.

Typical applications include:

• Point-to-point radio links
• SCADA systems
• Telemetry networks
• Industrial communications
• Utility infrastructure
• Mining operations
• Transport communications
• Remote monitoring systems
• Fixed wireless networks
• Government communication sites

Its directional characteristics help maximise network performance while minimising unwanted signals.

Built for Harsh Outdoor Environments

Constructed using quality aluminium components, the YB820-81 is designed to deliver long-term reliability in exposed outdoor locations.

Construction features include:

• Lightweight aluminium boom
• Precision aluminium elements
• Corrosion-resistant materials
• Weather-resistant design
• Low-maintenance construction
• Suitable for permanent tower and mast installations

Whether installed on communications towers, industrial facilities, or remote infrastructure, the antenna is built to withstand demanding environmental conditions.

Improved Signal Quality

The directional design helps reject unwanted RF signals while concentrating energy where it is needed most.

Advantages include:

• Reduced co-channel interference
• Improved signal-to-noise ratio
• Enhanced communication reliability
• Better long-distance performance
• Stable wireless links

This makes the antenna ideal for critical communication networks where dependable performance is essential.

Typical Applications

The RFI YB820-81 is suitable for:

• Fixed radio infrastructure
• SCADA systems
• Telemetry networks
• Utility communications
• Mining operations
• Transport infrastructure
• Industrial communications
• Communications towers
• Remote monitoring sites
• Government radio networks

Why Buy From Mobile Systems Limited?

Mobile Systems Limited supplies professional antenna and radio communication solutions throughout New Zealand.

Our experienced team provides:

• Fixed-site communication system design
• Directional antenna selection
• Professional installation services
• RF testing and optimisation
• Coverage planning
• Tower and repeater infrastructure
• Network commissioning
• Ongoing maintenance and technical support

Whether you're upgrading an existing communication link or building a new fixed wireless network, we'll help you select the right antenna for maximum performance and reliability.

Frequently Asked Questions

What frequency range does the YB820-81 operate on?

The antenna is designed to operate across the 803–896MHz UHF frequency range.

What are the advantages of a 20-element Yagi antenna?

A 20-element Yagi provides higher directional gain, increased communication distance, improved signal quality, and better rejection of unwanted interference than antennas with fewer elements.

What applications is the YB820-81 designed for?

The antenna is ideal for point-to-point radio links, telemetry, SCADA systems, industrial communications, utility networks, mining operations, transport infrastructure, and remote monitoring.

Is the antenna suitable for outdoor installation?

Yes. The YB820-81 is manufactured using corrosion-resistant aluminium and is designed for permanent outdoor use in demanding environments.

Can this antenna be used with digital communication systems?

Yes. It is suitable for both analogue and digital communication systems operating within the supported frequency range.

Can Mobile Systems Limited install this antenna?

Absolutely. Mobile Systems Limited supplies, installs, aligns, tests, and commissions professional fixed-site antenna systems, repeater infrastructure, and wireless communication networks throughout New Zealand.