Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4PV callsign genealogy
Currently held by Martins, Douglas J
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 AI4PV's current licensee, walking backwards.
- KN4BBDcancelledPinson Valley High School Amateur Radio ClubALgranted 2017-02-17cancelled 2021-06-02
Successor callsigns
Callsigns held now by people who previously held AI4PV.
- Martins, Douglas JSCgranted 2026-06-19
All historical holders
Every license row we've seen with the callsign AI4PV, oldest first.
- Martins, Douglas J SC2006-05-23 → cancelled 2006-06-10
- Pinson Valley High School Amateur Radio Club AL2021-06-02 active