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Re: "spontaneous" LEILA activation



Hi All

What is the possibility that when Lelia responds to a radar or other
signal heard by notching and transmitting a warbling modulation , that
the triggering signal can also hear Lelia's downlink ???

Joe   K0VTY
================================
On Tue, 25 Sep 2001 12:18:43 -0700 "Greg D." <ko6th_greg@hotmail.com>
writes:
> So, what we have here is our first, straight out of Star Trek,
> adaptive satellite shielding system.  By notching this junk out of
> the uplink, LEILA is protecting our communications ability.
> 
> As Captain Kirk would say, "Shields up"!
> 
> Greg  KO6TH
> 
> 
> 
> >From: Estes Wayne-W10191 <W10191@motorola.com>
> >To: amsat-bb@AMSAT.Org
> >Subject: Re: [amsat-bb] "spontaneous" LEILA activation
> >Date: Tue, 25 Sep 2001 13:44:03 -0500
> >
> >Graham Shirville wrote:
> >
> >the keyword is Pave Paws. Google shows up lots of sites and this 
> one has
> >some interesting detail:
> >http://www.fas.org/spp/military/program/track/pavepaws.htm
> ><http://www.fas.org/spp/military/program/track/pavepaws.htm>
> >but it does not mention my neighbouring installation at a place 
> called
> >Fylingdales in Yorkshire.
> >
> >Wayne W9AE replies:
> >
> >That web site describes the early warning radar installations in 
> Cape Cod
> >(Northeastern US) and Beale AFB (Southwestern US):
> >
> >Frequency: 420-450 MHz
> >Peak radiated power: 582.4 kW
> >Average radiated power: 145.6 kW
> >Elevation angle: 3 to 85 degrees
> >
> >That should get LEILA's attention.
> >Even the -20 dB first side lobe should get LEILA's attention.
> >
> >It would be interesting to find out the scan pattern of these 
> radars and 
> >see
> >if "fits" the pattern of spontaneous LEILA sirens.  Unfortunately, 
> the scan
> >pattern is probably highly variable and classified information.
> >
> >Wayne Estes W9AE
> >Mundelein, IL, USA
> >
> >----
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> 
> 
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