[crispycrafter2]

OK, so my knee jerk reaction was that the wavelength that starlink use simply won't allow it. Practically the antenna needs to be at least 1/4 the size of your target wavelength [1] It seems though space ex are using vanilla Ka, Ku and E band frequency, which have wavelengths in the centi to millimeter range. It must be that we don't have enough devices yet to allow for seamless handover between sats, without ground based tracking antennas [1] https://physics.stackexchange.com/questions/315915/why-do-we...

[londons_explore]

They have a non-interference requirement for geostationary satellites using the same frequencies for uplink. That means they need fancy antennas to make sure there is a null all along the eqaitorial geostationary orbit line...