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Subject:
From:
Martin McCormick <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Wed, 26 Nov 2008 10:55:24 -0600
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	It is likely that you just have a clearer view of the
sky to the South Southwest in Louisville for whatever reason. I
don't remember the exact frequencies used by X.M. and Serious,
but they are in the couple of gigahertz range, I think. The
signals are weak and the antennas are omnidirectional so it
doesn't take muchto block the signal. Remember that microwave
ovens operate in the 2.5 GHZ range because the water really
absorbs those frequencies beautifully. Human bodies and trees
have lots of water in them so they block the signal effectively.

	Even the thinnest metal blocks those frequencies well so
be glad that you can receive well in Louisville. Screens, metal
sheeting and even metalic window tinting can all block
microwaves. The doors on a lot of microwave ovens have a screen
or something similar behind the glass so one can look in on the
food without getting cooked alive so even very thin metal screens
can block almost 100% of the signal.

Martin

Bill Deatherage writes:
> what I found out that was interesting was when I lived in Northern 
> Kentucky
> around the Covington Area I would have trouble with Serious dropping out.
> When I lived in my Condo I would have to put the antenna out side to pick 
> it
> up.  I was on the first floor and when I moved to an apartment there I was
> on the second floor and I could some times get it with my antenna inside. 
>  I
> was on the second floor there.  There was one floor above me.  Now that I
> live in Louisville which is futher south about 100 miles I live in an
> apartment on the second floor and I get
> Serious just fine.  I have had an ocasional drop  out but that isn't too
> often.  I don't have another floor above me so I don't know how much this
> factors in.  But x.m. is a lot easier to recieve than Serious.
> Bill Deatherage
> 
> 

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