Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5MUX callsign genealogy
Currently held by DONNELL, WILLIAM 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 N5MUX's current licensee, walking backwards.
- Bobb, David BTXgranted 2013-09-25cancelled 2013-11-09
Successor callsigns
Callsigns held now by people who previously held N5MUX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5MUX, oldest first.
- DONNELL, WILLIAM A TX1988-07-05 → cancelled 2000-07-06
- Bobb, David B TX2023-09-23 active