Does PSA still exist? Let me clarify with an example. WAOS Austell (used to be WACX) before the upgrades in power, used to be a 1k daytimer operating on a regional frequency. They had PSA which meant they could sign on everyday at 6 AM at 500 watts and then go to 1k at local sunrise. It was always listed in the Broadcast Yearbook as PSA. I know WACX was still using the PSA in the 1980s.
So, my question is does PSA still exist after all of the upgrades over the years. We can use WAOS as the example. They are now 20,000 watts day and 67 watts night. At 6:00 AM do they go up to 500 watts and then at sunrise go up to 20,000 watts?
To make my question more complicated, my fuzzy memory is that the FCC has bungled the records for PSA. The station could only operate with PSA if they could produce the original telegram that gave them PSA authority.
So, for you engineering types "of a certain age", what say you?
.... for the record... this is the kind of question that comes to mind when you are mindlessly looking at radio-locator.com at 4 AM.