Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8MRK callsign genealogy
Currently held by EUCLID HEIGHTS CLUB
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 W8MRK's current licensee, walking backwards.
- Blasing, Thomas MTXgranted 2009-08-03cancelled 2011-07-12
Successor callsigns
Callsigns held now by people who previously held W8MRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8MRK, oldest first.
- EUCLID HEIGHTS CLUB OH1997-10-14 → cancelled 2009-10-15
- Blasing, Thomas M TX2021-05-04 active