Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA3MUJ callsign genealogy
Currently held by Baun, Willard P
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 KA3MUJ's current licensee, walking backwards.
- Baun, Willard PPAgranted 2018-08-13cancelled 2018-09-18
Successor callsigns
Callsigns held now by people who previously held KA3MUJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA3MUJ, oldest first.
- BAUN, WILLARD P PA1991-06-18 → cancelled 2003-06-19
- Baun, Willard P PA2018-09-18 active