About 20 years ago I did the DOG (dipole on ground) experiment) at my
northern Indiana location. Many others have likely done their own DOG tests
but my results were that the dipole needed to be shortened by nearly 50% to
still be resonant when lying on the grassy soil at this location. Based on
this data and wanting something that worked well I installed 1/4 wave
radials for 80 meters AND also 1/4 wave for 160 meters. I figured if the
short ones don't get you then the long ones will. FWIW, YMMV, de gary, kd9sv
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Michael
Walker
Sent: Friday, October 27, 2017 9:04 AM
To: topband
Subject: Topband: More on radials
Here is my problem I am trying to solve. This is why I was asking about
radials earlier.
- I have a full length 1/4 - ish wire that runs over top a tall tree and
the last 25 ft or so are horizontal
- I can do elevated radials or lay radials on the ground
- I'm not worried about SWR as I can dial that out later.
- I have an 80m common feed point for a similar wire for 80M cw
The antenna does work, but I can tell by the SWR 2:1 bandwidth I have
significant ground losses now with 4 ground radials ~ 1/4 wave for each
band (80/160)
Thoughts and suggestions?
Mike va3mw
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