Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0ATP callsign genealogy
Currently held by Porter, Thomas R
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W0ATP's current licensee, walking backwards.
- Porter, Thomas RCOgranted 2017-12-21cancelled 2020-05-15
Successor callsigns
Callsigns held now by people who previously held W0ATP.
No current licensee on record previously held this callsign.