Canvey Island, Essex, England Justin@g0ksc.co.uk
Twin boom quad
144MHz LFA Yagis
144MHz LFA Yagis

Low Noise LFA Yagis designed by G0KSC free to build for personal use.

144MHz LFA Yagis
70cms LFA Yagis
70cms LFA Yagis
Twin-Boom G0KSC Quads
G0KSC Twin-Boom Quads
Twin-Boom G0KSC Quads
G0KSC Custom Dish feeds - Above installation @ HB9Q
Custom low-noise dish feeds
Custom low-noise dish feeds
G0KSC Custom Dish Feeds

Above installation @ HB9Q

G0KSC Custom Dish feeds - Above installation @ HB9Q
previous arrowprevious arrow
next arrownext arrow
 
Read Time: 1 - 2 minutes

FORCE 12 produce the first 'bent element' LFA Yagi

FORCE 12 once again show their commitment and belief in the LFA Yagi by building and proving the first of the LFA2 series Yagis which includes bent elements in order to enhance performance.

The version pictured below is an 8.9 metre (29.4 feet) 7 element LFA2 (Loop Fed Array) which has the reflector end sections bent slightly towards the loop to increase F/B and show improvements in bandwidth/SWR. With an SWR of less than 1.1:1 from 50 to 50.5 MHz, over 12.8dBi forward gain and a massive 43dB F/B, this antenna is set to be a winner when it goes into production and carries all of the low-noise properties of all LFA Yagis so will be as popular as ever in city and noisy locations.

The FORCE 12 7el 6M LFA2 Yagi with bent elements which help to increase performance

This is the first in the line of LFA2 Yagis, other models include directors as well as the reflectors having bends within their length to enhance performance. In addition, some models have more than one reflector too. By bending the ends of the reflector towards the loop feed system, F/B is increased by a massive 5dB over a straight reflector. In addition, SWR response becomes much flatter.

The Amateur Antenna industry (commerical and otherwise) has proved achieving good gain levels are easy with the 30 year old software packages still being used for 'computer optimisation'. However, the very latest software modelling technology is required in order to see accurate results from an antenna such as the LFA2. Gain is easy to achieve, however, maintaining gain while achieving flat SWR, good F/B, good Bandwidth and maintaining stability when in wet and adverse weather conditions is not comonplace, even with the most reputable of well-known Ham antenna providers. If you want it all, you need an LFA!

Watch this space and the FORCE 12 website for further models and release dates of this and other pioneering LFA designs or give Mark N5WEB a call at FORCE 12 for more information. www.force12inc.com