[NLRS] Is there published data on tree foliage ...
Chris Elmquist
chrise at pobox.com
Thu Jul 10 11:53:56 EDT 2014
On Thursday (07/10/2014 at 10:19AM -0500), Donn, WA2VOI wrote:
>
> No, the report doen't state "condition" of the foliage. From
> contest, however, I assume it refers to "dry" foliage. The report
> treats each source of loss seperately: i.e., atmospheric, water
> vapor, rain, scattering, etc. (The report is aimed at mm wavelength
> propagation. The foliage loss equation just happens to cover down
> to 200MHz.)
Got it. Thanks.
> FWIW, I agree with you completely re: rain-covered foliage and TV
> signals. My "look" at the Shoreview towers is blocked by a hill and
> I suffer badly from multi-path. Dry conditions are... OK, but
> during and after rain, no so much.
Pretty much the same experience here. I used to be able to get a shock
off the coax when we had the analog TV transmitters running (well, OK,
not quite but it was a HUGE signal). Now, I loose lock and go all
pixelated on KSTP and WCCO when it rains. I am 7.5 mi from Shoreview
with no hills blocking, just trees. I can see the aircraft beacon lights
on the towers from my roof when the leaves are not out.
> PS The FCC report is readily available on the Internet. (Where I
> got it originally.) Don't rememebr exactly, but 'FCC OET Bulletin
> 70' in a search engine should find it.
OK. Thanks Donn.
Chris N0JCF
--
Chris Elmquist
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