No U1 chip as far as I can tell.https://twitter.com/90sChris/status/1189293040101462017 …
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Replying to @reneritchie
Rene, it seems that there may be an AirTag system in the case and each AirPod Pro device. I am testing this today with a spectrum analyzer. It may be a full U1 or a variation of what is found in the iPhone 11. I’ll let you know.
3 replies 4 retweets 30 likes -
Replying to @BrianRoemmele @reneritchie
Brian Roemmele Retweeted Brian Roemmele
Rene, I ran tests with the spectrum analyzer and I detected pulses at 6.24GHz & 8.2368GHz. This is indicative of UWB signals. And thus there may be a version of AirTag. However this can be a false signal—I will need more testing. Inconclusive thus far.https://twitter.com/BrianRoemmele/status/1189369988932440064?s=2 …
Brian Roemmele added,
Brian Roemmele @BrianRoemmeleField test notes: Apple AirPods Pro Test: 6.24GHz & 8.2368GHz for Ultra Wide Band transmissions w/ spectrum analyzer Results: Pronounced pulses at 6.24GHz & 8.2368GHz frequencies Conclusions: Pulses at 6.24GHz +& 8.2368GHz may indicated an Apple U1 chip Notes: inconclusive pic.twitter.com/abU21oZOlC2 replies 0 retweets 1 like -
Replying to @BrianRoemmele
FCC docs would have to declare that either way, no?
1 reply 0 retweets 1 like -
Replying to @reneritchie
Rene, this is interesting. This is unlicensed spectrum. It is traditional that it is disclosed. If the power is of a threshold. I will have to verify the code on UWB beacons. It may have a pass. Also will look up the FCC docs on AirPod Pro.
1 reply 0 retweets 1 like
Rene, Well this was inconclusive also. It seems that unless the FCC changed the rules, it may not require the a low power beacon in UWB be disclosed on the FCC document. But I think Apple should disclosure it as this is standard practices. Still digging. https://ecfsapi.fcc.gov/file/60001090750.pdf …pic.twitter.com/DtWpPxk9tP
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