Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5OQM callsign genealogy
Currently held by DUNCAN, HAROLD L
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 W5OQM's current licensee, walking backwards.
- SIMS, RANDOLPH DMSgranted 2013-06-26cancelled 2013-07-16
Successor callsigns
Callsigns held now by people who previously held W5OQM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5OQM, oldest first.
- DUNCAN, HAROLD L OK1997-07-29 → cancelled 2009-07-30
- SIMS, RANDY D MS2013-07-16 → cancelled 2025-07-17