Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4IMM callsign genealogy
Currently held by WITT, PHILIP B
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 W4IMM's current licensee, walking backwards.
- Brown, Michael PALgranted 2019-08-19cancelled 2019-09-17
Successor callsigns
Callsigns held now by people who previously held W4IMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4IMM, oldest first.
- WITT, PHILIP B AL1998-04-03 → cancelled 2010-04-06
- Brown, Michael P AL2019-09-17 active