RFI 16dBi YB820 Telstra Yagi Directional Antenna

  • Fully welded construction for maximum performance and reliability
  • Narrow beamwidth & high front to back ratios effective in reducing interference
  • Can be configured in stacks or bays for higher gain applications
  • Short low loss cable tail with N-female connector
  • Australian manufactured and warrantied.

If you're having serious problems with your Next-G broadband internet or mobile phone signal, the performance of this high quality fully welded aluminium antenna cannot be matched. This antenna has been used by several mining companies to provide mobile phone reception over 80km to nearest phone tower. Measuring in at 2.4m, this yagi is a solid piece of hardware that is often used for: - very flat outback locations - areas where transmission in the direction of the base station is clear of obstructions for several kilometres - when no service is available, even for several kilometres - when no other antenna cuts the mustard. This is the highest performing yagi antenna available. This antenna has been specifically designed for long range and very poor signal areas - a quality antenna designed for long term domestic, commercial and industrial applications.

The RFI Y820-81 rests at ground potential and provide excellent lightning protection and reduced precipitation static noise. Termination is via an 'N' female coaxial connector fitted to a short 9302 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.

Higher Gain Yagi Antennas

To increase the gain of a yagi antenna by 3dB you have to double its length. A good quality 16dBi yagi measures around 2.4m in length, so you can imagine a 19dBi yagi should measure between 4-5m in length. Accordingly having a larger yagi is not practical, instead higher gain is achieved by using grid antennas, such as the two models below.

Network Compatibility
Telstra Next-G™ (850MHz)


Electrical Specifications

Frequency Range: 806-896MHz Input Impedance: 50Ω VSWR: <1.5:1 Vertical Beamwidth: 27° Horisontal Beamwidth: 24° Front to Back Ratio: >18dB Radiation: Directional Maximum Power: 100Watts

Mechanical/Environmental Specifications

Construction: Fully welded aluminium, alodined finish Cable: Short 9302 Durathene tail Connector: N Female Mount: Recommend RFI Bracing Harness Wind rating: 189km/hr Weight: 1.35kg Dimensions: 2400mm (L)

"We just wanted to say a huge thank you for all your assistance - we actually have had such success - the antenna works a treat and knowing the exact direction to point the antenna has been a huge help, Thank you so very much - great job!!"

--Email Feedback 16/07/2015

What connection does this antenna have?

This antenna has an N Female connector for attaching your required length of cable. You can use the dropdown box below to select how much cable you would like to purchase. You'll notice all cables in the dropdown box end with a FME connector - this is the connector used to attach your patch lead or mobile phone cradle. If you need something else or a different length, please use the Cables menu.

n female connector
N Female Connector

Special Delivery Information

This product is 2.4m in length and can only be delivered by a courier (not Australia Post). As such we cannot accept a PO Box. Please provide an address where someone will be present to sign for the package.


SKU YB820-81
Shipping Weight 1.3500kg
Shipping Width 0.300m
Shipping Height 0.080m
Shipping Length 2.400m
Shipping Cubic 0.057600m3