Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AD4ZY callsign genealogy
Currently held by Porter, Pamela
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 AD4ZY's current licensee, walking backwards.
- Porter, PamelaNCgranted 2023-03-28cancelled 2023-04-15
Successor callsigns
Callsigns held now by people who previously held AD4ZY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AD4ZY, oldest first.
- Ebert, Carol S FL2003-10-10 → cancelled 2016-01-05
- Porter, Pamela NC2023-04-15 active