Some more LoG (Loop on Ground) results

[ChrisSmolinski]

I decoded 40 meter WSPR last night on my KiwiSDR, from 2300-1300 UTC this morning. This is with the 350 foot LoG antenna. Pretty decent results. My next step is to build a smaller LoG again, keeping the larger one, and compare results, especially on the higher bands.

[refmo]

Several nice catches there.  ZB2BU runs 200mw to a 30' wire, on top of the Rock of Gilbraltar.
Looking forward to seeing results with the smaller loop.

[Josh]

Is this thing a circular loop, or are you altering the layout to exhibit some directionality? Some log writeups say they lay the wire out in a "dual diamond" config or whatever it is.

[ChrisSmolinski]

The 350 ft loop is an irregular rectangle in shape. Time permitting I am going to re-lay it out as a square to increase the cross sectional area.

I set up the smaller loop yesterday afternoon, it is roughly a square 12.5 foot on a side. I made it with a 50 ft section of coax, using the shield, hoping the lower inductance of the large diameter shield vs #16 wire will help.  By the time I got it done, the higher bands were starting to close already, but some quick tests showed it generally produced stronger signals on 25 meters and up, vs the larger loop, which seems reasonable.

[ultravista]

Are either loops amplified or run straight to the radio?

[ChrisSmolinski]

Straight into the radio (though matching transformers), no amplifiers.