Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1JAP callsign genealogy
Currently held by PHILLIPS, JOHN A
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 W1JAP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1JAP.
- Porth, James ATXgranted 2021-09-28
All historical holders
Every license row we've seen with the callsign W1JAP, oldest first.
- Porth, James A TX2014-02-19 → cancelled 2021-09-28
- PHILLIPS, JOHN A NC2024-12-10 active