[Lowfer] WM " scribbling...effects of temp change on antenna current...

[Paul Daulton]

We need some one with mechanical engineering background to explain the 
ammount of water in
the air. A change in temp results in a change in the rel humidity and 
the volume of water. I suspect the change in antenna current day to 
night and with temp change is due to the dielectric constant of the air
which is the capacitive component of the antenna. Recent single digit 
temps here produced very low humidiy, far below what we usually have. I 
had a reduction in ant current that returned to normal when
weather warmed up. that would be a project for some one to chart the 
rel humidiy, volume of water in the air, temp and antenna current. I 
dont have any reference books on humidiy and the tables for determining 
the volume of water in the air. 

Quoting "Mike.WE0H" <we0h at gmx.com>:
> hi hi...No doubt. It's a weird one for sure. I have been putting up with
> it forever. I am guessing something to do with the trees. The transition
> from non-frozen ground to frozen ground is dramatic here too. The
> transition temp of 32F is night verses day on 1750 meters. Not so much
> on 600 meters. Haven't tried 2200 meters but will do so when the Loran
> stations go bye bye. 
>
> Mike
> WE0H
>
>
> W5JGV-Ralph wrote:
> > Well now, ya' got me on that one!  Being a naturalized Southerner after
> > all these years, I kind of forgot that water comes in other forms than
> > liquid. 
> >
> > This is the first year that I have been at this QTH when it has become
> > cold enough to actually freeze the earth to a few inches depth.  That
> > did cause a major change in the tuning of my antenna until it thawed out
> > again.  But that does not explain the diurnal variation you are seeing. 
> > I'll think about that and see if I can come up with anything. 
> >
> > 73,
> >
> > Ralph   W5JGV - WD2XSH/7
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Paul Daulton K5WMS
beacon WMS 185.3005 khz qrss30/slow 24/7
Jacksonville,Ar 72076
em34wu