On Aug 6, 10:29 pm, Newps wrote:
Owen wrote:

The FAA's strategy changed in September, 2001.

Yes.

Primary

coverage will be with us to stay, and may even be expanded in some areas.

Radar's days are limited. After ADS-B gets rolled out radar sites will
be decommissioned.

Maybe but my guess is maybe not. Air Traffic Control might "primary"
off of some other form of "radio direction and ranging" but 9/11
pointed out that "primary" still does its job. I am 40...if I Live as
long as my Father has (so far) or my Great Grandfather (106) I suspect
that "primary" is still radiating.

Robert