8 element 50MHz LFA2 Yagi (11.67m)

An 8 element  low-noise LFA2 Yagi

Got a lot of noise you want to get rid of? Maybe you are a contester of DX'er who does not want to listen to anyone off of the sides or back? If so, read on...

The G0KSC LFA Yagi is a major step forward in the development of the Yagi Antenna; it provides a low-noise front-end for your radio so you hear more weak signals. This compact 8 element 50Mhz LFA provides stunning performance across the important section of the 6m band (50.00 - 50.500MHz). Hard to beat with a direct 50 Ohm feed-point and no matching losses and suppression of unwanted noise !!

This antenna has very highly suppressed lobes in both azimuth and elevation plots and therefore is idea for very noisy city locations. If you want to beat the noise in a mid-sized 6m Antenna, this is the one for you!

The LFA2 has a Bent Reflector system designed to enhance SWR bandwidth and F/B.

Performance

13.4dBi @ 50.150MHz

32.82dB @ 50.150MHz

Peak Gain: 13.52dBi

Peak F/B: 35.69dB

Power Rating: 5kw+

SWR: Below 1.1:1 from 50.00MHz to 50.500MHz

Stacking Distance: 5.5 -7.0m ( 6.5m recommended)

2 Stacked Gain @ 6.5m spacing: 16.05dBi

2 Stacked F/B: 31.35dB

2 Stacked Gain @ 6.5m Spacing 15m above ground: 21.34dBi

Boom Length: 11.678m

Weight: 17.9Kg / 39.4LB

Turning Radius: 6.031m / 19.8ft

Wind Loading: 0.52 Square Metres / 5.62 Square feet

Wind Survival: 172KPH / 107MPH - A 125MPH+ (HD) version available upon request

Other options available if higher wind loading/survival is required.

Specification

This antenna is made with tapered elements 1/2inch (12.7mm) centers and 3/8 inch (9.525mm) outer sections. The antenna has fully insulated elements which will ensure continuous, high performance for many years to come. Boom to mast brackets are included with all antennas which will support 2 inch (50mm) masts.  Boom is 1.75 inch (44.45mm) square 10SWG (3.2mm) aluminum. A Kevlar boom guy system is provided with this antenna.

Our antennas are constructed with the best quality materials in order the best mechanical construction can be achieved, not the cheapest and most profitable! Even a digital caliper is used (with an accuracy of .01mm) to measure the elements during production to ensure they are within 0.2mm of what they should be, this ensures they work as well as our software model predicts.

Note: much development time has gone into our antennas, not just on basic electromagnetic design, we are able to model the effect of insulators, booms and other objects to ensure the make up or our antennas have least effect on performance and pattern degradation. More information can be found here

• Marine grade Stainless Steel Fittings
• Original Stauff Insulation clamps
• Mill finished boom and elements for highest levels of accuracy
• Guy support system supplied

Azimuth Plot

Elevation Plot

Single 8 element LFA up 15m above ground

2 x 8 el LFA Yagi 6.5m apart with the bottom antenna 10m above ground

SWR

4 x 11.67m long 50MHz LFA2s at IW5DHN