[Lowfer] Paul's Loop

[Bill Ashlock]

Paul, Jay

>Did some quick calculations on Paul's loops. With the two loops in free 
>space (no ground loss consideration) the difference between 0.625 copper 
>tubing and RG-59/U (treating the shield as solid - which it isn't) would be 
>5.6 dB. I'm measuring a 10 dB difference at my location 3 miles away.
>Skin depth at 1.704 is about 2 mils vs. 6 mils or so at .185 which may help 
>to explain the poor shield performance as a loop conductor higher in 
>frequency.

At this location I'm guessing a lot more than a 10db difference. Paul, your 
signal is dogbones most of the time! Interesting, how, at times there is a 
lot of FM distortion. Other weird things are going on as well - like a 
strong signal just above USA this morning. I'm using QRSS10 at the moment.

>Once Paul gets a current reading the ground losses can be calculated. At 
>least the ground losses >should knock the ultra high Qs down somewhat. Paul 
>mentioned that driving near the loop on his >tractor messes it up!

Yah, he'd best be careful with that tractor or he will really mess up the 
signal!

Bill A (Wm)

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