RFI Ruggedised 9 Element Yagi 400-420MHz 12DB Blk Coat RDA9-65
$517.50
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
Ruggedised UHF Directional Yagi Antenna, 9 Element, 400–420MHz
The RFI RDA9-65 is a ruggedised, high-gain directional Yagi antenna for fixed-site UHF communications, built for repeater links, telemetry, and SCADA networks in demanding environments.
Overview
The RFI RDA9-65 is a 9-element ruggedised UHF Yagi antenna covering 400–420MHz, delivering 13dBi of directional gain for point-to-point links, repeater systems, and other fixed-site communications infrastructure. If a smaller footprint suits your site better, the RFI RDA6-65 (6-element, same band) is a lower-cost step-down option in this ruggedised range.
Its heavy-duty welded aluminium construction with a black powder-coated finish is built for coastal, alpine, and industrial sites where standard antennas struggle. The full-band design means no on-site tuning is required.
Key Features
- 9-element directional Yagi design, 13dBi gain means the strongest point-to-point reach in MSL's ruggedised RDA range, for network designers linking distant fixed sites.
- Full 400–420MHz coverage with no tuning required means a straightforward install with one less variable to get wrong on site.
- 18dB front-to-back ratio means strong rejection of unwanted interference from behind the antenna, for sites sharing spectrum with other UHF users.
- Heavy-duty welded aluminium with black powder-coated finish means it stands up to coastal, alpine, and industrial conditions where lighter-duty antennas fail early.
- DC-grounded elements means built-in protection against static build-up and help dissipating a lightning strike, for exposed mast-top infrastructure.
- Rated to 100W input power means it handles serious repeater and base station transmit power without drama.
- N female connector with weather-resistant cable tail means a low-loss, high-power connection suited to permanent fixed-site installs.
Applications
- Repeater stations and point-to-point radio links
- SCADA and telemetry networks
- Utility and transport communications
- Mining and industrial radio systems
- Local government and public safety communication networks
- Remote monitoring infrastructure in coastal or alpine locations
What's in the Box
- 1 x RFI RDA9-65 9-element ruggedised 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 RDA9-65 mounts via a 100mm x 32mm diameter powder-coated 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 | 400–420MHz |
| Elements | 9 |
| Gain | 13dBi |
| Front-to-back ratio | 18dB |
| Horizontal beamwidth | 46 degrees |
| Vertical beamwidth | 41 degrees |
| VSWR | <1.5:1 |
| Power handling | 100W |
| Connector | N female with short 9302 cable tail |
| Construction | Welded aluminium, black powder-coated finish |
| Mounting area | 100mm x 32mm diameter |
Spec sheet PDF: pending confirmation with RFI. The file previously linked here was a technical note on a different topic and has been removed.
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 repeater infrastructure
- Network commissioning and ongoing support
Whether you're upgrading an existing repeater site or building a new communications network in a harsh environment, we'll help you select the right antenna for dependable long-term performance.
Frequently Asked Questions
What frequency range does the RDA9-65 cover?
The antenna is designed for professional radio systems operating between 400MHz and 420MHz.
What is the gain of the antenna?
The RDA9-65 provides 13dBi of directional gain, making it ideal for long-distance radio links and repeater installations.
Is this antenna suitable for outdoor installations?
Yes. It is specifically designed for permanent outdoor use, featuring welded aluminium construction and a durable black powder-coated finish for excellent weather resistance.
What applications is this antenna best suited for?
The RDA9-65 is ideal for repeater systems, point-to-point radio links, telemetry, SCADA, utility communications, mining operations, transport infrastructure, and emergency service networks.
Does the antenna help reduce interference?
Yes. Its narrow beamwidth and high front-to-back ratio help reject unwanted signals, improving communication reliability and signal quality.
Can Mobile Systems Limited supply and install this antenna?
Yes. We supply, install, test, align, and commission fixed-site antenna systems, repeater networks, and professional radio infrastructure throughout New Zealand.
Specifications
RFI Ruggedised 9 Element Yagi 400-420MHz 12DB Blk Coat RDA9-65
$517.50