[Lowfer] "WE" back to normal power...

Thu, 3 Oct 2002 21:49:36 -0500

What do you think of running 1" or maybe 2" copper pipe for the lower run
for now??? Is there a problem that the south side of the loop is at a
45-degree south sloping angle??? The north side is perfectly vertical. Maybe
I should pull the topside of the south end up to the tree so it is vertical.

Mike>WE0H
http://www.we0h.us/lf.html
185.3026kc QRSS-30/CW@15wpm
ID is "WE"

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Bill Ashlock
Sent: Thursday, October 03, 2002 9:04 PM
To: [email protected]
Subject: RE: [Lowfer] "WE" back to normal power...

Mike,

>I found last night by driving around within a mile of the antenna, that
>there is a good lobe in the N/S direction and lobes at SE, SW, NW, and >NE.
>I would think it would work at your heading. Archie is SE of me >and he
>sees my signal pretty much as strong as Lyles

Unless there is something unusual about your loop (and that's not likely)
You have a very simple figure 8 radiation patten. In other words there are
two major lobes and a null off to either side. At the four 45deg directions
from the loop the signal will be down 30% or -3db. You can't drive around in
within a mile of the antenna and expect to see this because you are not far
enough to be in the so-called far-field pattern. I'd figure to be at least
1.5mi to have a good chance at this. If you have a E-field measuring antenna
readings will be effected by trees within 100ft of this antenna so look for
open areas - even shopping center parking lots work nicely. A portable loop
antenna would not be affected by trees but it is much harder to manage out
on the road so I stick with the mag-mount E-probe for all measurements.

>Archie is SE of me and he sees my signal pretty much as strong as >Lyles.

Considering you are 152 miles from Archie, giving up 3db due to the loop
pattern, and Lyle is 220mi from Archie, this isn't too bad. With another 3db
that you would gain with an RG-8 conductor it would put you amongst the
better beacon signals!

Bill