nanog mailing list archives
Re: What do you think about this airline vs 5G brouhaha?
From: Masataka Ohta <mohta () necom830 hpcl titech ac jp>
Date: Wed, 19 Jan 2022 14:20:51 +0900
Jay Hennigan wrote:
Radar receivers are typically some form of direct conversion with rather good selectivity, synchronized to the frequency of the transmitted pulse.
No. Direct conversion stage has no inherent frequency selectivity and is subject to saturation by noise of any frequency unless the noise is removed in advance. Selectivity can be enjoyed only after successful unsaturated conversion, direct or to IF. But, the solution is to put an LC band pass/stop filter between an antenna and a receiver, though I have no idea on the difficulty to obtain FAA/FCC approval to do so. Masataka Ohta
Current thread:
- Re: What do you think about this airline vs 5G brouhaha?, (continued)
- Re: What do you think about this airline vs 5G brouhaha? Brandon Martin (Jan 18)
- Re: What do you think about this airline vs 5G brouhaha? Masataka Ohta (Jan 19)
- Re: What do you think about this airline vs 5G brouhaha? Brandon Martin (Jan 20)
- Re: What do you think about this airline vs 5G brouhaha? Jay Hennigan (Jan 21)
- Re: What do you think about this airline vs 5G brouhaha? Michael Thomas (Jan 21)
- Re: What do you think about this airline vs 5G brouhaha? Mel Beckman (Jan 21)
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- Re: What do you think about this airline vs 5G brouhaha? Mel Beckman (Jan 21)
- Re: What do you think about this airline vs 5G brouhaha? Jay Hennigan (Jan 21)
- Re: What do you think about this airline vs 5G brouhaha? Masataka Ohta (Jan 18)
- Re: What do you think about this airline vs 5G brouhaha? Jay (Jan 19)
- Re: What do you think about this airline vs 5G brouhaha? Masataka Ohta (Jan 19)
- Re: What do you think about this airline vs 5G brouhaha? Jay Hennigan (Jan 19)
- Re: What do you think about this airline vs 5G brouhaha? Tom Beecher (Jan 19)
- Re: What do you think about this airline vs 5G brouhaha? Carsten Bormann (Jan 20)