Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7MDC callsign genealogy
Currently held by Culbertson, Michael D
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 W7MDC's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7MDC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MDC, oldest first.
- BRIGGS SR, JACK N WA1997-03-28 → cancelled 2009-03-31
- Culbertson, Michael D OR2011-05-14 → cancelled 2023-05-16