Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8EFM callsign genealogy
Currently held by SPRIGGEL, GERALD O
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 W8EFM's current licensee, walking backwards.
- SWARTZ, MICHAEL CMIgranted 2003-11-19cancelled 2007-10-20
Successor callsigns
Callsigns held now by people who previously held W8EFM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8EFM, oldest first.
- SPRIGGEL, GERALD O OH1994-09-22 → cancelled 2006-09-23
- Swartz, Michael C MI2018-09-15 active