- Aug 10, 2006
Emirates suspends US destinationsDubai's Emirates airline announced it would suspend flights to several destinations in the United States as of January 19 until further notice because of concerns over 5G mobile deployment.
There is a sizeable gap on the radio-frequency spectrum between the 5G networks in question, which operate between 3.7 and 3.98Ghz, and the altimeters, which use frequencies between 4.2 and 4.4Ghz.
Two major telecommunications companies agree to delay launching new mobile services near key airports and Emirates suspends US routes after major American airlines said 5G would interfere with aircraft technology.
With New 5G Delays, Can the FCC Be Trusted? FCC
Why is this this nonsense going on?
I have weak RF knowledge, but at these frequencies everything is SDR or PLL on a chip, laser trimmed resonators, cut to parts per million. Even coughpy budget 5G phones will not be spewing interference at 4.2Ghz. Spectrum analyzer 'Fails' should see any failed brands blacklisted forever. FCC's job is to 'nick' faulty spectrum polluters, super hard. A band pass or notch filter should already be on aircraft altimeters. I imagine the RF horn also points downwards. Normally the innards are in a shielded box (trying to remove mixer and harmonic whinge whinge talk).
So it boils down to naming and shaming the names and models of altimeters that are cough, and known to lack robust design. I suspect most 30yo gear would pass, but to be sure test the telcos 5G equipment at extreme temperature ranges (thermal drift) at 100% load.
There are some reports that all these C-band reflections, light up claimed stealth fighters and or could be used to be a passive radar, or that passengers could also geo-locate in 3D and ask why are we in circuit etc.