Thanks to all who responded.
One of the suggestions was to wrap about 40-45 turns of RG8X mini on a PVC
core with a diameter of 4 incheslightweight and easy. Part two was to
ground the braid of the feeder line coax at the point where it reaches
ground level.
What do you think?
Late last week I encountered interference on 160 meters which was repeating
at 41 khz intervals, and this morning I was able to track the problem down
to low voltage bookcase lights at my neighbors home which is 430 feet
away. I created a website to document this case which includes a link to a
If it were my system, I would use an air core choke like you posted and
ground the feedline where it reaches earth.
The nice thing is you can install the choke right at ground level with no
ill effects at all.
Cheap, simple, and clean. It will work as well as anything else you can do
and be
On Mon,9/29/2014 2:31 PM, Mike Waters wrote:
It's 6 turns of F-6 coax through four 2.4 OD Fair-rite #31 cores ($7 each
from Mouser), per K9YC's PDF.
My pdf calls for a lot more turns than that for 160M, but it ain't
broke, don't fix it. :)
73, Jim
_
Topband Reflector
From p. 33: With RG-6, RG-8X, and RG-59, use 7 turns through five 2.4
o.d. #31 toroidal cores.
Looks like it could stand one more core and one more turn, if I only used
it on 160 and 80.
73, Mike
www.w0btu.com
On Mon, Sep 29, 2014 at 5:44 PM, Jim Brown j...@audiosystemsgroup.com
wrote:
On
W0BTU was kind enough to include a link to his inverted-L EZNEC model so I
added that to a thread over on eHam which discusses using a dual-band
autopilot matching network, in this case using the inverted-L on 160 and 80
with no tweaking or switching of the matching network needed:
