Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MDC callsign genealogy
Currently held by Cappel, Mark 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 W4MDC's current licensee, walking backwards.
- Cappel, Mark DNVgranted 2011-07-05cancelled 2011-08-06
Successor callsigns
Callsigns held now by people who previously held W4MDC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MDC, oldest first.
- TUCKER, CLARENCE E GA1998-11-19 → cancelled 2010-11-20
- Cappel, Mark D NV2022-02-12 active