Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8GM callsign genealogy
Currently held by Spaedt, David R
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 W8GM's current licensee, walking backwards.
- Spaedt, David RMIgranted 2021-10-07cancelled 2021-12-21
Successor callsigns
Callsigns held now by people who previously held W8GM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8GM, oldest first.
- MC CARTY JR, WILLIAM G FL2009-09-10 → cancelled 2021-12-01
- Spaedt, David R MI2021-12-21 active