The modeling i’ve seen plus my own has been +\~ 1 to 2dB for 50 - 70 ft
vertical sections
-Charlie N1RR
401-742-7240 <(401)%20742-7240> 8AM - 9PM
*E-mail*: n1rr@n1rr.com
*Website*: www.n1rr.com
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https://www.youtube.com/channel/UCPDzEf57Ad80cVKOiLZLB7w/videos
On Sun, Jan 14, 2024 at 8:59 PM Steve Harrison <k0xp@k0xp.com> wrote:
> Has anybody plotted the radiation patterns for inverted Ls on 160? I'm
> particularly interested in those for relatively-low antennas, say 40 ft
> max, over fairly-poor ground such as desert sand with the water table
> perhaps 120 feet down.
>
> TNX,
>
> Steve K0XP
>
>
> On 1/2/2024 6:56 AM, VE6WZ_Steve wrote:
> > Today I uploaded a short 6 minute video showing how to use the Kiwi
> radios located all over the world to test your transmit antenna.
> >
> > How is the front-to-back on your 4 square really performing?
> > It the dipole or the vertical performing better on the DX path?
> > Make an azimuth polar plot of your Yagi and see how it compares to
> modelling. How does the pattern change across the band?
> >
> > This is not a new thing, but in this video I describe the method for
> those that may not be familiar with it.
> > No test equipment is needed. All that’s required is a PC sitting beside
> your radio.
> >
> > Using the “S-meter” function on the Kiwi radios makes it quick and easy
> to record signal levels from your transmit antenna.
> > This method is far more accurate than trying to estimate a signal level
> while watching a bouncing analog or digital S-meter.
> >
> > https://youtu.be/_BMeVJQ_cwI <https://youtu.be/_BMeVJQ_cwI>
> >
> > 73, es HNY to all
> > Steve, VE6WZ
> > _________________
> > Searchable Archives:http://www.contesting.com/_topband - Topband
> Reflector
> --
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> Reflector
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