Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6MU callsign genealogy
Currently held by MUIR, DAVID
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 W6MU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W6MU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6MU, oldest first.
- MUIR, DAVID CA1996-01-23 → cancelled 1997-01-10
- BOSMA, TIM J CA2024-02-23 active