InnovAntenna 144MHz 20 Element X-Pol LFA Low Noise Yagis offer excellent performance in the 143.85 to 145.36 MHz This Loop Fed Array Yagi is a full-size beam with 19.02 foot boom, featuring 14.82 dBi of forward gain and a front to back specification of 39.1 dB. Designed by G0KSC, this LFA Yagi is a step forward in the design of yagi antennas, providing an ultra-low noise “front-end” for today’s modern 144MHz radios. This rugged 20 element (10 horizontal and 10 vertical) features a 50-ohm feedpoint so there are no matching losses.

The InnovAntennas 20-element X-Pol Yagi is built to withstand harsh weather conditions, with 1.5 x 1.5 in. (40x40mm) square aluminum tubing for the boom and .25 in. (6mm) aluminum tubing for the passive elements; the active elements are .5 in. (13mm) in diameter. Stainless Steel hardware is used throughout the antenna to ensure years of trouble-free service. The boom-to-mast bracket accommodates up to a 2-inch (50mm) mast.

Specifications and Performance:

• Gain: 14.82 dBi

• Peak Gain: 14.82 dBi @ 144.3MHz

• F/B: 39.1 dB

• Peak F/B: 37.43 dB

• Max Power 10 kW

• SWR: Below 1.1:1 from 143.85MHz to 145.3MHz

• Boom Length: 19.02 ft. (5.8m)

• Turning Radius: 9.84 ft (3m)

• Wind Survival: 99.5 MPH (160 km/h)

• Weight: 14.33 lbs. (6.5kg)

• Wind Loading: 2.41 sq. ft. (0.22sqM)

Stacking information:

Vertical Stacking Spacing Distance: 3.1m for minimum under-lobes.

Clean Lobes on the Azimuthal plane

Clean Lobes on the Elevation plane

SWR Plot showing SWR of less than 1.3:1 across designed frequency range of the antenna