Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9OM callsign genealogy
Currently held by PRENTISS, JOHN G
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 W9OM's current licensee, walking backwards.
- Micllef, Marc AIAgranted 2007-08-14cancelled 2007-09-01
Successor callsigns
Callsigns held now by people who previously held W9OM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9OM, oldest first.
- PRENTISS, JOHN G IL1997-10-24 → cancelled 2002-06-06
- Micllef, Marc A IA2017-09-28 active