RFI RDA6-61 Ruggedised UHF 450 to 480 MHz Yagi Antenna

Product Code



Design Type

Application Category


RF Category

The RDA Series are ruggedised high gain yagi antennas which will provide excellent point to point communication in extreme climatic environments. RDA Series antennas exhibit narrow beamwidths and high front to back ratios to help minimise any potential interference to and from other radio systems.

The RDA6-61 is an ideal antenna for long range LTE B31 (450 MHz) in extreme environmental conditions often experienced in regions using this band such as Aland Islands, Mongolia, and Russia.

RDA6-61 Built specifically for hostile conditions, the boom and the elements of the RDA Series yagis are significantly larger and more robust than on the standard YB range. The feed element is of full folded dipole construction for maximum bandwidth and performance and all elements, including the feed element are welded to the boom. Welding ensures both maximum strength and minimal potential for the generation of intermodulation and other interference products. 

The entire welded assembly is etched and finished with a black powder coating which aids significantly in ice shedding by maximising solar heat retention. 

Constructed with 3, 6, 9 or 16 elements, RDA yagis can be configured in stacks or bays for higher gain applications in horizontally or vertically polarised systems. Application details on phasing and mounting yagi antennas are included in the technical notes section in the back of this catalogue. 

RDA Yagis rest at DC ground potential and, properly earthed, provide excellent lightning protection and aid in the reduction of precipitation static noise. 

Termination is via an 'N' female coaxial connector fitted to a short Durathene cable tail. Durathene is a PTFE dielectric and polyethylene jacketed cable providing superior resistance to weathering and abrasion and is less susceptible to bird attack than standard PVC sheathed cables.

  • All welded construction for maximum and reliable performance
  • Rugged six element 11 dBi design
  • Covering LTE B31 and UHF applications 450 to 480 MHz
  • Black powder coating aids snow and ice shedding
  • Ruggedised construction for use in extreme conditions
  • Short Durathene tail with N Female connector
Antenna Technical Data
Physical Characteristics
Construction Material
RF Connections
Radome Colour
Other - Black
Environmental Rating No Data
1100 mm (L)
Operating Temperature -40 °C to 60 °C
0.9000 kg
UHF Yagi Element
Electrical Specifications Mechanical Specifications
Input Impedance 50 Ω Input Connector
Polarisation Input Connector Gender
Max. Input Power 250 W Cable Series
PIM, 3rd Order - Cable Length 200 mm
Range: 450 to 480 MHz
Peak Gain 11.10 dBi Azimuth Beamwidth 54°
VSWR < 1.5:1 Elevation Beamwidth 45°
Radiation Efficiency No Data Electrical Tilt
Front-to-Back Ratio > 20 dB Inter-Port Isolation -
Cross-Polar Discrimination - Cross-Polar Isolation -


RFI Wireless Logo

RFI is an Australian based designer, manufacturer and distributor of communications antennas, multicouplers, combiners, duplexing filters, amplifier systems and associated hardware. RFI has been serving the needs of the wireless communications market for over 25 years.

First founded as a manufacturer of antenna systems, RFI has grown to be a key player in the development, manufacturing and distribution of wireless technology and energy products.

Select the quantity closest to your requirement.