Topband: Relationship Between Ground Wave and Low-Angle Radiation
n4zr at comcast.net
Fri Sep 13 14:23:09 EDT 2019
Rick, I misled you with the reference to low-angle radiation. I'm
broadly aware of how ground conductivity in the Fresnel zone works.
What I'm interested in doing is characterizing how much my signal
improves as I add radials - sort of like a distant field-strength meter.
73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.
On 9/13/2019 12:39 PM, Richard (Rick) Karlquist wrote:
> On 9/13/2019 6:31 AM, N4ZR wrote:
>> I don't think I've ever read anything on this topic. Basically, what
>> I'm asking is, could ground wave to a fairly nearby Skimmer be used
>> as an analogue to low-angle radiation to assess the effectiveness of
>> radial systems on an inverted L? W3LPL is about 30 miles from me and
>> has a very capable Skimmer Server-based RBN node.
> A radial system has nothing to do with take off angle.
> Take off angle is strictly affected by ground conductivity
> over a much large area than even a "big" radial field.
> If you want to improve your inverted L, change it to a
> top loaded vertical (IE "umbrella" wires). That will make a lot more
> difference than adding radials.
> Rick N6RK
> Searchable Archives: http://www.contesting.com/_topband - Topband
More information about the Topband