[amsat-bb] Re: Wind Turbine Interference?

[Dave Guimont]

At 10:26 PM 11/4/2007, you wrote:
>At 16:28 11/4/07 -0800, you wrote:
> >
> >>Wind Turbines are a threat to Homeland Defense. They can produce 
> large Blind
> >>Spots on Radars - above, infront and behind them - so yes they can cause
> >>problems to RF signals.
> >>
> >>Effects of Windfarms on Radar
> >>http://www.southgatearc.org/news/october2005/windfarms_radar.htm
> >>
> >Trevor,
> >
> >That is some pretty good stuff for higher powered xmitters...But I
> >doubt there is any instrument sensitive enuff to measure the
> >reflection potential from any satellite we will ever launch, and the
> >"shadow" that it would cause on a LEO is in less than a
> >second...HEO's may take a little longer....
> >
> >This is conjecture based on my HS physics...I would appreciate
> >comments from any of the many engineering experts we have on here...
> >
> >            73, Dave wb6llo at amsat.org
>
>                         WB6LLO,
>
>   1.    I have to admit I do not understand your term "reflection potential
>from any satellite".
>         I would greatly appreciate an explanation of this effect and how to
>calculate its magnitude on a received satellite signal.
>
>   2.    How do you calculate the "shadow time" (of this QRM?) to be less than
>a second?
>
>         73s  de  AA1YE
>
>PS:     Checking your QRZ entry and your bio reminds me that I learnt to fly
>"Stringbags" in WW2. But the war ended before we were deployed to a
>carrier. I should have been older or declared a false age to join.


Hi John,

Well, I guess I missed the point of the statements made, and 
ASSUMED  one was talking about hamsat xmissions, not higher powered 
stations...not the first time I've screwed up!
My apologies....

I just loved landing on carriers...did it in from 1943 until I 
retired. ....Landed on a carrier on 31 Jan 1967, as I remember USS 
ORISKANY, returned to NAS Alameda on 31 Jan and retired  on 1 Feb 
after 24 years .. Every time I see or "hear" a two plane section go 
over, I get green with envy!!


>



            73, Dave wb6llo at amsat.org
                    Disagree: I learn....

               Pulling for P3E...