[Lowfer] MP Loop antenna reconfigured

[Mitch Powell]

Thanks for refreshing my memory Laurence - I still remember your  sketches of the trees and the
many wires around the loop. I have two parallel # 8/#10 separated by 2" pvc insulators every
3-4 feet - as requested by the squirrels.

I retuned with the addition of each vertical -  and also found a reduction of  capacitance ( about 100 pf each time ).
Temperature hovering -4C to +4C so not getting any frozen ground yet. 
In a distant past I spent 2-1/2 years at 78.8N 103.6W....... I imagine you're beginning to lose the daylight now ?

Thanks agn

Mitch
On 2012-12-08, at 10:30 PM, Laurence KL1 X wrote:

> 
> I recall the original 1 cable #8 required around 9nF to resonate but adding 4 X #6 and #8 required 12nF or so. It was a lot of copper and loops diverged by a few feet depndant on which branch of the Cottonwoods the slingshot put a weight over - ! an increased the signal around 1.5dB was realized - again this from memory.
> 
> Ground screens beneath loop to reduce ground losses....experiment :-)
> 
> Ive just installed 2 x 3 ft widths  x 150ft long , separated by 5 ft or so of welded fence wire parallel to the loop on the ground and bonded to each other  and then tied down to a Well bore casing - it was getting dark so I couldnt play long but it resulted in a reduction of some 200pf to resonate the main loop - loop current remained the same as expected.
> 
> We will see what differences it makes when the wx improved - it just started snowing...  All "grounds" are isolated back to the coax so it is a reactance change at least.
> 
> Cheers
> Laurence
>