Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0MOD callsign genealogy
Currently held by JOHNSON, CHARLES 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 W0MOD's current licensee, walking backwards.
- Schramm, AidenSDgranted 2021-09-22cancelled 2021-10-22
Successor callsigns
Callsigns held now by people who previously held W0MOD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0MOD, oldest first.
- JOHNSON, CHARLES D MN2007-09-06 → cancelled 2019-12-04
- Schramm, Aiden SD2021-10-22 active