G0KSC - Simple to build, High Performance Yagi and Quad Antennas - Home of the LFA Yagi

144MHz LFA Yagis

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

70cms LFA Yagis

Twin-Boom G0KSC Quads

G0KSC Twin-Boom Quads

G0KSC Custom Dish feeds - Above installation @ HB9Q

Custom low-noise dish feeds

G0KSC Custom Dish Feeds

Above installation @ HB9Q

Read Time: 2 - 4 minutes

Professionally built G0KSC Antenna by InnovAntennas

With one of the first UK contests came a couple of reports on G0KSC antenna performance. The RSGB 4m Contact took place today and both M0KSJ and M0CES has these word to say about their new antennas:

'Thought you might like to see a picture of my completed 3 ele LFA Yagi - I ran some more tests today using a temporary tripod mast at about 5m and was very impressed at being able to work G4ASR in Hereford plus heard a very loud G4RFR in Dorset (didn't work as I went out into the garden to manually adjust the beam heading and he'd vanished by the time I got back). Next step is to get it up on the rotatable mast on the house at about 10m.'

Kevin M0KSJ

The 3el 70MHz LFA at M0KSJ

Justin, from Don M0CES.

From the RAF Waddington ARC Clubhouse (G0RAF) based in a pub in Lincoln we have been using your 50/70 6 ele antenna.

On the 70mhz contest this morning from a height of 9m asl and using 15 watts (Icom 910/4m transverter) we worked the south coast and up to broadside to my home town of Stonehaven just south of Aberdeen...GM4ZUK/P. That is a long way on 70mhz at no height and 15wtts. No preamp, no amp and with just cups of tea to keep us going. We were using the thick long black mounts for the elements that you don't like and 5 turns of coax at the top instead of any of your designs. We will of course do it properly when the wx gets warmer, but your antenna works and at very little cost. I use for 70mhz a FT847 for /P and just a dipole centre and a bit of ally, but I have made the 3 ele LFA but still with the big black insulators as I need to assemble/disassemble in a rush in the dark and the cold and the wet !! I have modded the big centre bolt to miss the elements so they are not touching the boom in any way and I can twirl the wingnuts and be on my way home at 2230 after the contests. We were just using what we had and of course your expertise and design and it works.

Don, M0CES

OZ1HTB also switched to the G0KSC 11el 4m/6m Duo this month and had some excellent results. He had the comments which tell the whole story:

Hi Justin

I am now Reading OZ7IGY much stronger than the old ant (Another well-known dualband antenna modeller) + S1-2.....so yes I am a happy.

Bent, OZ1HTB

The 11el G0KSC 4/6m Duo at OZ1HTB

'Justin hi

We just finished our recalculated 28 MHz 7 element OWA on 14m long boom yagi from our material. SWR curve is exactly what was expected from your construction with 12,44 dBi gain and 19,9 dB F/B! When the time and propagation permit we going to do some more on-air comparison. Including two pictures of yagi installation at 12m tower position on our @ 950m a.s.l. mountain top station with measured SWR curve. Top antenna is two element WARC quad.'

Thank you, Dan S50U

GM0USI's 4el 4M LFA built by G0KSC

The 7el 28MHz G0KSC OWA by S50U

Got a G0KSC Yagi in the air? send me a photo and I will get it online!

Justin G0KSC

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