Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD0OM callsign genealogy
Currently held by Shappe, Michael S
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 WD0OM's current licensee, walking backwards.
- Shappe, Michael SMNgranted 2023-12-30cancelled 2024-06-01
Successor callsigns
Callsigns held now by people who previously held WD0OM.
No current licensee on record previously held this callsign.