RFI Yagi Antenna 20 Element UHF 806-896MHz YB820-81
$761.30
GST Inclusive. Discounts and Shipping calculated at checkout.
Quantity
Pickup available from the Mobile Systems Showroom: 1/14 Portside Drive, Mount Maunganui. We will notify you when your order is ready for collection.
In stock, ready to be shipped
UHF Directional Yagi Antenna, 20 Element, 806–896MHz
The RFI YB820-81 is a high-gain directional Yagi antenna for fixed-site UHF communications, built for long-distance point-to-point links, telemetry, and SCADA networks.
Overview
The RFI YB820-81 is a 20-element UHF Yagi antenna covering 806–896MHz, engineered for fixed-site installations that need strong directional gain over long distances rather than omni-directional coverage. It's built for point-to-point radio links, SCADA, telemetry, and other critical fixed communications infrastructure.
Its welded aluminium construction with a gold alodined finish keeps it corrosion-resistant on exposed towers and masts, and the full-band design means no on-site tuning is required.
Key Features
- 20-element directional Yagi design, approximately 14.0dBd gain means the strongest point-to-point reach in MSL's RFI Yagi range, for network designers linking distant fixed sites.
- Full 806–896MHz coverage with no tuning required means a straightforward install with one less variable to get wrong on site, for technicians commissioning fixed UHF links.
- 18dB front-to-back ratio means strong rejection of unwanted interference from behind the antenna, for sites sharing spectrum with other UHF users.
- Narrow 28° horizontal beamwidth means precisely focused signal for long, low-interference point-to-point links.
- Welded aluminium construction with a gold alodined finish means it stands up to years on an exposed tower or mast in New Zealand conditions, and the conductive finish helps effective earthing when mounted.
- Rated to 100W input power means it handles serious repeater and base station transmit power without drama, for high-power fixed-site systems.
- N female connector with short cable tail means a low-loss, high-power connection suited to permanent fixed-site installs.
Applications
- Point-to-point radio links and fixed wireless networks
- SCADA and telemetry networks
- Utility and transport communications
- Mining and industrial radio systems
- Government and public safety communication networks
- Remote monitoring infrastructure
What's in the Box
- 1 x RFI YB820-81 20-element UHF Yagi antenna, N female connector with short 9302 cable tail
- Mast/boom clamp sold separately, see Complete Your Setup below
Complete Your Setup
The YB820-81 mounts via a 100mm x 25mm diameter aluminium boom. The RFI UCR1 Antenna Clamp (20–52mm) is a likely fit for this mounting diameter, though we'd recommend confirming against RFI's mounting guide for your exact mast size before ordering.
Key Specifications
| Brand | RFI |
| Frequency range | 806–896MHz |
| Elements | 20 |
| Gain | ~14.0dBd (per RFI published spec) |
| Front-to-back ratio | 18dB |
| Horizontal beamwidth | 28 degrees |
| Vertical beamwidth | 27 degrees |
| VSWR | <1.5:1 |
| Power handling | 100W |
| Connector | N female with short 9302 cable tail |
| Construction | Welded aluminium, gold alodined finish |
| Mounting area | 100mm x 25mm diameter |
Download the RFI YB815/YB820 Series datasheet (PDF)
Video
No product video currently available for this model. Suggested brief if one's produced: antenna being mounted and aligned on a tower, close-up of the N-connector termination.
Why Buy From Mobile Systems Limited?
Mobile Systems Limited supplies professional antenna and radio communication solutions throughout New Zealand from our base in Mt Maunganui, Bay of Plenty. Our team provides:
- Fixed-site communication system design
- Directional antenna selection
- Professional installation services
- RF testing and optimisation
- Coverage planning and tower/repeater infrastructure
- Network commissioning and ongoing 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 806–896MHz 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 welded aluminium construction with a gold alodined finish is designed for permanent outdoor use in demanding environments.
Can this antenna be used with digital communication systems?
Yes. It's suitable for both analogue and digital communication systems operating within the supported frequency range.
Can Mobile Systems Limited install this antenna?
Yes. We supply, install, align, test, and commission professional fixed-site antenna systems, repeater infrastructure, and wireless communication networks throughout New Zealand.
Specifications
RFI Yagi Antenna 20 Element UHF 806-896MHz YB820-81
$761.30