Re: [amsat-bb] trees

["Robert Oler" <cvn65vf94@xxxxxxx>]

Hello.

A couple of points.  Be sure that your next door neighbor is actually 
shooting through the trees.  AT least two of my DSS dishes (I have a 
few...its cheaper that way) "look" like they are doing that but if youreally 
work the offest point angle they are clear.

Second DSS doesnt have "a little snow".  Its one of three states...totally 
there, dropouts but holding lock (a transit state) and "searching for 
signal" thats the nature of Digital communications.

Three.  Trees are death at 12 ghz.  One of mny DSS stations is on a 6 foot 
dish.  The signal strength is enormous and it has lost only about 5 minutes 
a year to rain fades (the tropical storm that cmae to HOU a while back had a 
total of three minutes).  I can go out, take a limb full of leaves that I 
have just trimmed from the trees hold them over the feed horn and zap.

Four.  Most of the installations are free (and the equipment) to new 
customers.

Hope this helps.

Robert


>From: rdwelch@swbell.net
>To: Bruce Nolte N3LSY <brucenol@abs.net>
>CC: Bob V Johnson <w7lrd@juno.com>, amsat-bb@AMSAT.Org
>Subject: Re: [amsat-bb] trees
>Date: Sat, 13 Jul 2002 18:23:52 +0000
>
>My neighbor recently had a satellite TV dish being installed on his roof.
>I think this is the 12gHz service.  I talked with him about the fact that
>he is shooting through two trees on my lot and a grove of 5-6 big ones in
>the next yard beyound mine.  He said the company told him he might have a
>little snow with heavy rain but didn't say anything about the trees.  Well,
>surorise, surprise.  He is getting 170 channels of snow free reception!
>The company must be desperate however because they gave him the
>installation, free equipment including three receivers and a monthly rate
>the same as he was paying for cable.  I wonder if anyone can account for
>this "tree performance."  The trees are sycamore, box elder and black
>walnuts, all 50 feet in height or more.  He is shooting right through the
>leafy part of the trees, not below it.
>
>Bruce Nolte N3LSY wrote:
> >
> > Bob V Johnson wrote:
> >
> > >Hello
> > >Just how attenuating are fir trees at 2.4Ghz?  I was trying to work  
>into
> > >Europe and could not even hear the MB.  Would a bigger dish help?  I'm
> > >fairly new on AO-40 and I haven't had more fun since I lit up my first
> > >vacuume tube!
> > >73...Bob...W7LRD
> > >Seattle
> > >----
> > >Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > >To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> > >
> > >
> > >
> > >
> > Same problem here on the East coast Bob. Trees are a major PITA, I have
> > a large walnut tree that blocks my view to the east and Southeast, and
> > last night I could barely make out the beacon through the trees, but my
> > setup pulls down a solid S7 or better then the satellite is in the clear
> > at similar squints. Trees even affect  TVRO class AO-40 setups
> > profoundly, so the only alternatives are to find a location in your yard
> > with fewer leafy obstructions to set up your dish, put the works on a
> > tower so it shoots above the trees (but Douglass Firs can get huge), or
> > get out the chainsaw.
> >
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>
>--
>73, Roy -- W0SL
>
>E-Mail: rdwelch@swbell.net
>Home Page: http://home.swbell.net/rdwelch
>----
>Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
>To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org




Robert Oler WB5MZO Houston TX


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