Topband: 160M Inverted-L Radial Question

[donovanf at starpower.net]

Hi Mark, 


The sloping radials you're proposing to use also have the affect 
of shortening the effective length of your vertical, just as if 
you had raised the feed point. 


73 
Frank 
W3LPL 

----- Original Message -----

From: "Mark K3MSB" <mark.k3msb at gmail.com> 
To: "topBand List" <topband at contesting.com> 
Sent: Monday, September 26, 2016 2:33:54 AM 
Subject: Topband: 160M Inverted-L Radial Question 

I've been doing some reading on elevated radials for Inverted-L antennas. 
The existing literature seems to fall into two types; ground radials where 
the feed point is very close the ground, and systems were the feed point 
is elevated at the height of the radials. 

My Inverted-L is 50 feet high and has the feed point in a box at ground 
level. I'm considering using 2 elevated radials so as to reduce the 
radial field next to my new (hopefully) RX antenna (BOG). Since I 
don't want to raise my feed point by 5 feet and thereby decrease the 
vertical part of the Inverted L accordingly, I was considering using a 
pair of elevated radials (5 feet high -- don't know the exact height 
yet). I was planning on the radials sloping up 45 degrees from the base 
of the Inverted-L to my radial height. The radials will not be straight, 
but will have doglegs due to property constraints. 

I haven't found any literature that addresses this consideration. 

Comments? 

73 Mark K3MSB 
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