Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4WJP callsign genealogy
Currently held by PHELPS, WILLIAM 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 W4WJP's current licensee, walking backwards.
- PHELPS, WILLIAM JSCgranted 2015-01-20cancelled 2015-03-07
Successor callsigns
Callsigns held now by people who previously held W4WJP.
- PALMER JR, WILLIAM JALgranted 2004-05-08cancelled 2008-02-01
All historical holders
Every license row we've seen with the callsign W4WJP, oldest first.
- PALMER JR, WILLIAM J AL2004-05-08 → cancelled 2007-01-25
- PHELPS, WILLIAM J SC2025-02-04 active