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Re: What do you think about this airline vs 5G brouhaha?


From: Michael Thomas <mike () mtcc com>
Date: Tue, 18 Jan 2022 14:01:13 -0800


On 1/18/22 1:47 PM, Brandon Martin wrote:
On 01/18/2022 16:34, Michael Thomas wrote:
Is this the band that has really really short range for 5G? If so, it doesn't seem like a very big deal to give them the airspace on approaches. I mean, if you live under a flight path by the airport, not getting fast 5G is hardly your biggest problem.

This is the C-band spectrum near 4GHz.  The super short-range (or, rather, highly direction and subject to attenuation by almost anything) that you're probably thinking of is likely the UWB mmWave band up at ~30GHz.

C-band has moderate structure penetration and limited foliage penetration.  With line of sight and at the power levels the carriers would consider running, several miles of usable range would be unsurprising, though I suspect many typical deployments would have design cells smaller than that while using existing "4g" (and newly opened ex-TV broadcast space) low- and mid-band frequencies for wider area coverage at reduced speeds. Interference considerations, especially high above the horizon (planes...) would be present for potentially dozens of miles away.

An article I read said that other countries are accommodating them. What are they doing different?

Mike


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