InnovAntennas LFA-Q 4 Element 50 MHz Loop Quad Beams from G0KSC represents significant development of LFA Yagis with a substantial difference. The LFA-Q (Loop Fed Array Quad) uses top and bottom booms and through-boom LFA Yagi-style loops arranged vertically for every element. This very different, rugged design achieves better gain for a given length of boom than standard or LFA Yagi. Also, instead of using symmetrical square or triangular loops, the shape of the loops has been compressed into rectangular form, so the short side sections are exactly 180 degrees out of phase resulting in a cancellation effect, like a balanced line. InnovAntenna LFA-Q achieves great rejection to the sides and the rear of the antenna while retaining excellent gain, f/b and SWR bandwidth across the band. These are amazingly compact, high gain antennas constructed to withstand serious weather conditions!

The 50MHz 4 Element LFA-Q is made with tapered elements one-half inch (12.7mm) center sections and 3/8 inch (9.525mm) outer sections. The antenna has fully insulated elements which will ensure continuous, high performance for years to come. The LFA-Q has a twin-boom system, 32mm square with 1.6mm wall thickness. Two boom-to-mast brackets are provided, one on each boom, formed from marine grade stainless steel. Both brackets include 2 square U-bolts for the boom and 2 round U-bolts for the supporting mast.

InnovAntennas are constructed with the best quality materials in order that 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 spec, to ensure the antenna works as well as our software model predicts.

Note: A great deal of development time has gone into our antennas, on mechanics as well as basic electromagnetic design, we are able to model the effect of insulators, booms and other objects to ensure the structure of our antennas have least effect on performance and pattern degradation.

InnovAntennas LFA-Q 4 Element 50 MHz Loop Quad Beam Specs:

Gain: 11.26dBi @ 50.150MHz

F/B: 29.9dB @ 50.150MHz

Peak Gain: 11.3dBi

Peak F/B: 30.3dB

Power Rating: 5kw+

SWR: Below 1.3:1 from 50.00MHz to 50.400MHz

Stacking Distance: 5-8m (7m recommended)

2 Stacked Gain @ 7m spacing: 14.35dBi (free space)

2 Stacked F/B: 27.41dB

2 Stacked Gain @ 5.1m Spacing 15m above ground: 19.25dBi

Boom Length: 4m.

Weight: 6Kg / 13LB

Turning Radius: 2.02m / 6.66ft

Wind Loading: 0.22 Square Meters / 2.36 Square feet.

Wind Survival: 160KPH/100MPH.