James Rodenkirch wrote:
What about radials above the ground?
This link http://www.commtechrf.com/documents/nab1995.pdf leads to a paper
by Clarence Beverage with some real-world results for monopoles with
elevated wires used as a counterpoise. Here is a quote from it:
\ \The antenna system
These elevated systems are readily modeled using NEC-2. However the
radiation patterns shown by a typical NEC far-field analysis do not
accurately show the fields actually launched by them, or by any vertical
radiator with its base near the earth, because they do not include the
surface
Keep in mind this Sole purpose of a BC station is to get coverage of about 60
miles running 5KW day time and 1 KW night time with no fad and quality signal
not to work DX.
I read in some posts or on some web site that it does not matter if the ends
are tied to a ground rod or not. Note then
Keep in mind this Sole purpose of a BC station is to get coverage of about 60
miles running 5KW day time and 1 KW night time with no fad and quality signal
not to work DX.
I read in some posts or on some web site that it does not matter if the ends
are tied to a ground rod or not. Note then
There have been several reports of established AM stations that the FCC gave
permission to replace a decayed or destroyed inground radial system with
elevated radials or an elevated mesh/radial arrangement.
In all the cases I read the FS measurements exceed the original and power
had to be
Thank you, Richard, fore passing the paper onlooks like I won't suffer by
having elevated radials in the least. Jim R. K9JWV
From: r...@adams.net
To: topband@contesting.com
Date: Sat, 5 May 2012 07:07:11 -0500
Subject: Re: Topband: Fwd: radals fer 160m vertcal
James Rodenkirch
I can work anything I can hear on 160. That's the whole deal... If I
can't hear it on the Hi-Z 4-square I can't work it..
I have a 45G 100 foot tower shunt fed with an Omega match of vacuum
variables. I am always flat as the variable to ground is motor driven. I
have 32 radials. At
Thanks for the wisdom, Rich. :-)
However, I've always wondered about the following statement. My question
is, on what amateur bands is this common? And on what amateur bands is this
possible?
On Sat, May 5, 2012 at 7:07 AM, Richard Fry r...@adams.net wrote:
Those fields from very low elevation
RE:
Those fields from very low elevation angles (say, less then 5 degrees)
can reach the ionosphere, and under the right conditions return to the
earth as a useful skywave.
Mike Waters asks:
My question is, on what amateur bands is this common? And on what
amateur bands is this possible?
It
Ive copied US BCB stations as far inland as Chicago in the far eastern
Meditaranean. Id be curious what the propagation mode was and if sky wave
how many hops?
I also regularly hear the LF BCB stations from EU and AF in the roughly
150-200KHz region and sometimes sounding like locals. What
Carl KM1H wrote [sic]:
Ive copied US BCB stations as far inland as Chicago in the far eastern
Meditaranean. Id be curious what the propagation mode was and if sky wave
how many hops?
It certainly wasn't by their ground/surface wave, but their skywave.
As to how many hops that took, please
- Original Message -
From: Richard Fry r...@adams.net
To: topband@contesting.com
Sent: Saturday, May 05, 2012 6:33 PM
Subject: Re: Topband: Fwd: radals fer 160m vertcal
Carl KM1H wrote [sic]:
Ive copied US BCB stations as far inland as Chicago in the far eastern
Meditaranean. Id be
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