Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WR7M callsign genealogy
Currently held by DeMark, Donald L
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 WR7M's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WR7M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WR7M, oldest first.
- RALPHS, CARL V UT1998-07-27 → cancelled 2010-07-28
- DeMark, Donald L NH2020-05-21 active