[ARC5] Re: What did they talk to ??
Unserviceable but Repairable
cosmoline at ba-watch.org
Tue May 3 08:13:20 EDT 2005
> A NASA website (http://www-istp.gsfc.nasa.gov/stargaze/Shorizon.htm)
describes h ow to calculate the distance to the horizon. Their
formula is in metric units, so I have converted it to imperial. I
t is D = 1.223 x sqrt(h) where h is the
height in feet. The result D is in miles.
1000' D= 38.6 mi
10,000 D=122.3 mi
30,000 D= 211.8 mi
Ya know, if you remember that $h1t about PI 'n stuff, you can get result
for a D=8000ft ball w/o any steenking NASA web site
What's missing here is that you can 'see' another 30000'-high plane at 2X
that difference, ie 400 mi.s. And if that planes's a repeater, it's
sig can go another 200 mi.s.
IE 600mi.s
Who sed Berlin-London same distance? OK, ok - there is 1/d attenuation.
Wull folks, I've a pal that was B17 radio in last 6 mo.s over DL. Never
touched a radio in flight. Liasson radio was via 'war wearies' used as
repeaters over western France. Interplane (command) on '522 as well
He ran the top-blister MG a lot tho. Even got a shot @ a ME-163 rocket
plane. And DID run thru all the 274 & 288 tune-up & test b4 each
flight. Tho never used on mission - they were ready.
This was all hashed a year ago & theory has it's adherants & detractors.
But why did one degreed, electronics-savy, ASB installer for CAF's
SBD make this up?
And AW288 sed there was a prod'n system called ARC-10 using ARC-1
VHFs
http://hereford.ampr.org/millist/m3.html sez so too.
Now I shudn't be a smart @$$ on arithmetic since I miscalculated BC-1000
channel widths last week (mea culpa '5cab). But, since no one mentioned
the repeaters (relays) again, had to throw this in.
'rm
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