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@amsat.orgWB6LLO,
- 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.
- How do you calculate the "shadow time" (of this QRM?) to be less than
a second?
73s de AA1YEPS: 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@amsat.org Disagree: I learn....
Pulling for P3E...