3 ms·
200 is already crazy large. Super crazy. The original request from Boeing was only 100 These altimeters are dangerously defective if they need a 400mhz guard
by DannyBee 5y ago
200 is already crazy large. Super crazy. The original request from Boeing was only 100
These altimeters are dangerously defective if they need a 400mhz guard band. That is nuts
- indrora 5y agoyou're actually looking at the intersection of three problems: * LTE is very noisy (it has echos in its sidebands for up to 100Mhz) * low-frequency LTE is *loud* -- punch through mountains loud. * These altimiters are doing the RF equivalent of looking for a needle in a haystream While FCC Part15 says "accept any/produce as little as possible", much of this comes down to the physics of RF.