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There is no enforcement for UAT above18k
In PCA above 18k ft, the world is all 090Mhz. radar, tcas, etc
That said, the heavies up there all have TCAS and can see your basic Mode AC transponder just fine.
As can FAA if within radar coverage as well.
Just remember, your 978 mhz UAT will not see any 1090 transponders directly.
You will onl see 1090 targets when both your UAT and their 1090 are observed by and within range of an ADS B ground station.
if you have dual mode 1090/978 ads B in, you will see any 1090 ads-b out aircraft, 978/1090, but not any basic 1090. mode a/c.
D
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David Wartofsky
Potomac Airfield
10300 Glen Way
Fort Washington, MD 20744
Last edited by n86121 : 02-18-21 at 04:45 PM.
Reason: add
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