[Lowfer] Tree-Tenna Changes 8-7-14

[jrusgrove at comcast.net]

Andy

A single wire can't be considered a feedline ... since there will be signal pickup / radiation ... 
even if laying on the ground. You can disconnect the tree at the far end of the 'feedline' and note 
signal/noise pickup as proof.

Jay W1VD  WD2XNS  WE2XGR/2


----- Original Message ----- 
From: "Andy - KU4XR via Lowfer" <lowfer at mailman.qth.net>
To: "1750 Meter lowfer list" <lowfer at mailman.qth.net>
Sent: Thursday, August 07, 2014 11:35 PM
Subject: [Lowfer] Tree-Tenna Changes 8-7-14


> ** I originally tried to send this to the 600mrg list , but to no avail ... **
>
> Greetings Gentlemen:
>
> Due to summer mowing, I have had the feedline from the tree to the shack suspended about
> 8 feet AGL.. For the sake of continued experimentation; I placed the feedline directly on the
> ground today.. I'll see what effects this will have in the coming days.. As expected, the
> " band noise " ( if I may call it that ), and the spherics dropped noticably.. Last night ( Wed. )
> the static was horrible, and tonite it is actually a bit worse, but the overall static level is 
> down
> with the feedline on the ground, and XXM started showing up about 30 min. after sundown, with
> XIQ showing up about 45 min. after sundown.. Overall, I do expect to see higher SNr numbers
> simply due to the drop in static levels, but that probably won't manifest tonight.. It's brutal !!
>
> Placing the feedline on the ground noticably changed the Impedance of the antenna, and I'll
> have to experiment over the next couple of days to find the optimum " L-C " match for
> 630 meters..
>
> One aggravating aspect of this effort is the living room TV.. I have always had to live with the
> TV lines in the waterfall, but with the noise level down considerably, I can now Hear the
> TV Growl.. The interference from the TV is not stronger, there is just less noise that has been
> over-riding it thus far..
>
> 73 to all :
>
> Andy - XR
>
> PS: Since composing of the original message, I have been quite surprised at the level
> of WSPR decoding I have been able to get tonight, even with the continuous S-3 static..
> Before laying the feedline on the ground, that would have been around S-8 level, in a
> 500 Hz IF Bandwidth..
>
> Andy
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