Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM0J callsign genealogy
Currently held by SPAFFORD, FREDERICK T
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 WM0J's current licensee, walking backwards.
- KF0SQTcancelledEmanuel Farm Ham Radio ClubMOgranted 2024-12-14cancelled 2025-01-14
Successor callsigns
Callsigns held now by people who previously held WM0J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WM0J, oldest first.
- SPAFFORD, FREDERICK T ID2012-08-27 → cancelled 2024-12-04
- Emanuel Farm Ham Radio Club MO2025-01-14 active