Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5DUI callsign genealogy
Currently held by MHOON, RICHARD D
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 W5DUI's current licensee, walking backwards.
- Schultz, Brian DMSgranted 2021-02-19cancelled 2021-03-12
Successor callsigns
Callsigns held now by people who previously held W5DUI.
- MHOON, RICHARD DARgranted 2014-08-08cancelled 2014-09-09
All historical holders
Every license row we've seen with the callsign W5DUI, oldest first.
- MHOON, RICHARD D AR2008-06-10 → cancelled 2014-08-08
- Schultz, Brian D MS2021-03-12 active