2 X 6M5LFA at G0KSC

Vine Antennas has been appointed sole distributor for commercial antennas made from Justin Johnson's excellent designs. We are working on a number of models and currently offer the following antennas. We shortly hope to offer the boom to element insulators as a part to home-builders. More details to follow.

DUBUS Magazine has the exclusive release of the details for these antenna with some of the first models described in a forthcoming DUBUS article.   We wish to gratefully acknowledge the kindness of the editors in allowing us to reproduce this article, which may be found by clicking here.

The Loop Fed Antenna  (LFA) provides superior performance over the traditional Yagi in many areas and provides a platform which provides Quad and Yagi features in one visually pleasing package.

Tired of all that noise you pick up from around your own home and other building near where you live?

LFA benefits are massive suppression side lobes in both the H and V planes, which means minimum local noise pick up and minimum interference when transmitting. LFA's also have wide SWR bandwidths and excellent return loss characteristics. Learn even more about the LFA by clicking here http://www.g0ksc.co.uk/whatis.html

Also - to see how Bren McCartney G4DYO works the DX, click here

"Had it (6M6LFA)measured and swr is perfect, the reflection co-efficient measured here an incredible 39 dB.Never found such figures on a antenna in real life. - 73's de Paul PA3GND"

"Re 6M5LFA - I'm well pleased so far, swr flat, pattern much sharper and f/b is superb. Still have the power line noise so cant really tell what the noise floor is like until that gets fixed (Tony EI7BMB)"

Put it up and found that compared to my old yagi the performance was better, on both reception and transmission. A pity the season almost had ended but still managed to work some new DXCC in the West Indies. Reports are fine and often I get through first inthe pile ups. I run no ampl. just 200 watts. Not all the local trash has gone but I think this is hardly possible anymore these days, but surely it has improved. This means in my eyes witha sharper forward pattern and more sensitive antenna being able to reduce noise is a double bonus. My conclusion so far is that these yagis rock , really perform in real life. You have done a fantastic job ! Paul PA3GND re 6M6LFA

The antennas shown below are current models we have designed and built. Others will be added to the range.

If any customer wishes to have stacking and baying details, the inventor of the Loop Fed Antenna, Justin Johnson G0KSC, will be very pleased to originate information at no charge. Just email him at mailto:justin@g0ksc.co.uk

 
Model Boom Gain - F/B ratio £ inc VAT Note Click for details
6M3LFA 1.9 8.47 - 30.3 dB 149   Click here for info
6M5LFA-S 5.7m 11.3dBi - 32dB 199   Click here for info
6M6LFA 7.05m 11.9dBi - 27dB 269   Click here for info
6M6LFA_6.4 6.45 11.6dBi - 32dB 269   Click here for info
6M7LFA 9.5 m 12.9dBi - 31dB 399   Click here for info
6M8LFA 12m 13.9dBi - 41dB 499   Click here for info
           
4M3LFA 1.6m 8.93dBi - 16.6dB 109   Click here for info
4M4LFA-S 2.25m 9.52dBi - 23.4dB 139 Smaller version of 4M4LFA - designed for OZ2M Click here for info
4M4LFA 3.3m 11.06dBi - 16.6dB 139   Click here for info
4M5LFA 3.46 10.8dbi - 22.4dB 159   Click here for info
4M9LFA 10.45m 13.4dBi - 26dB 499   Click here for info
           
2M9LFA 5.0m 14.21dBi - 25dB 169   Click here for info
2M11LFA 6.15m 15.24dBi - 29.44dB 239   Click here for info
2M16LFA 10.9m 17.08dBi -13.5dB 399   Click here for info

All the models described have 4mm stud terminals for an easily-wound choke balun. If customers prefer we can supply the baluns  at £20 each with standard N-female line connector for N-plug feedline, or SO239 on request. One of our baluns is pictured below