Whatever PCN they have to file, it has to be unique relative to fixed-position transceivers. I have no idea how they chose to handle this. Interesting they are using 18 GHz; Down here in the dense air world, I would not expect 18 GHz to reliably go more than 10 miles.

However, at a 10 mile altitude, the air density is roughly 1/10 what it is at sea level. At 20 miles, it is around 1/100. That's getting "close" to a vacuum, so I do not know how to figure the fade for that.

Aren't the majority of the Starlink sats at about 300 miles?


bp
<part15sbs{at}gmail{dot}com>
On 3/12/2022 3:24 PM, Forrest Christian (List Account) wrote:
Are they evenly spaced?

I don't think I've looked close enough at a pcn to see if elevation (angle above horizon) is specified.

Makes me wonder if the PCN is set up with that many beams to coordinate a link that could be pointed in any direction. 

On Sat, Mar 12, 2022, 2:45 PM Jason McKemie <j.mcke...@veloxinetbroadband.com> wrote:
I just received my first SpaceX PCNs. They have 71 different azimuth numbers listed in a 18ghz PCN, are they paying the FCC fees for each of these? I haven't seen a PCN like this before, I actually didn't know you could use 18ghz for this application. --
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