Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM8X callsign genealogy
Currently held by GRINTA, WILLIAM A
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 WM8X's current licensee, walking backwards.
- Saikaew, SupparerkGAgranted 2014-04-30cancelled 2020-11-17
Successor callsigns
Callsigns held now by people who previously held WM8X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WM8X, oldest first.
- GRINTA, WILLIAM A OH2008-10-28 → cancelled 2020-10-29
- Saikaew, Supparerk GA2020-11-17 active