Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4AUP callsign genealogy
Currently held by Alabama Historical Radio Society Inc
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 W4AUP's current licensee, walking backwards.
- KJ4RQBcancelledAlabama Historical Radio Society IncALgranted 2010-01-15cancelled 2010-03-09
Successor callsigns
Callsigns held now by people who previously held W4AUP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4AUP, oldest first.
- Sides, William P AL2006-01-31 → cancelled 2009-12-10
- Alabama Historical Radio Society Inc AL2019-12-13 active