Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7MHR callsign genealogy
Currently held by GREIG, MARK J
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 W7MHR's current licensee, walking backwards.
- GREIG, MARK JORgranted 2017-01-11cancelled 2021-08-31
Successor callsigns
Callsigns held now by people who previously held W7MHR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MHR, oldest first.
- COOK, BEN B OR2004-11-17 → cancelled 2016-12-24
- GREIG, MARK J OR2021-08-31 active