Larger version of my standard LoG transformer with M6 loop connection terminals and SO239 connector.

Do you have a problem with a high noise floor on HF due to local interference? I did, until I found the excellent Loop On Ground design by KK5JY (http://www.kk5jy.net/LoG/) which totally transformed the receive side of my station. The S9+10dB of noise on 80 meters vanished and was replaced by cleaner signals with an SNR improvement of between 3 to 6dB.

The Loop On Ground (LOG) is a simple antenna made up in its original design from a 15' x 15' square of wire laid on the ground, fed via an isolated ferrite transformer and connected to a receiver with coax cable. The XL only comes as a 50 ohm version (you can still purchase my standard LoG in both the 50 ohm or 75 ohm version here). I've also found that the original 15' x 15' version works well on 40 meters and up and a larger version made from a 25' x 25' square works better for me on the lower bands like 60, 80 and 160 meters.

The core is a genuine Fair-Rite wound with tough ETFE covered silver plated copper wire to prevent shorts that can occur with enamelled wire and a custom turn ratio that produced the best results after 6 months of testing . The enclosure is a genuine high quality Hammond 1591XXM with 2 flanges to allow easy pegging down. All the nuts and bolts are M6 marine grade A4 Stainless Steel with wing nuts for the loop connection to allow an easy install and a high quality PTFE SO-239 coax connector. The box is fully potted to ensure excellent weather protection and provide a long service life. Once installed, I suggest a wrap of self amalgamating tape around the coax connector and a smear of Vaseline on the loop connections to keep them corrosion free.

The XL version comes in a single variant only:

• 50 ohm (supplied with a SO-239 connector to use with common 50 ohm coax like RG58)

You can also choose between several different element options:

• No element (transformer only and supplied with 2 x 6.3mm insulated crimp terminals and 2 lengths of glue lined heat shrink ready for you to terminate your own element)
• 60' element (as per KK5JY original design, marked at 15' intervals with heat shrink and supplied with pre terminated 6.3mm insulated crimps, soldered and protected with glue lined heat shrink)
• 100' element (in my experience, better for the low bands, marked at 25' intervals with heat shrink and supplied with pre terminated 6.3mm insulated crimps, soldered and protected with glue lined heat shrink)

The element, where supplied, is 1.5mm Tri-rated BS6231 cable supplied in a brown colour. I also include 5 Galvanised Steel ground pegs with each element so you have everything you need to install the loop on soft ground.

Please note that all of my products are handmade in my own workshop and may be subject to slight manufacturing variations.