Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MSK callsign genealogy
Currently held by McAdams, Mark A
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 W5MSK's current licensee, walking backwards.
- McAdams, Mark ATXgranted 2010-08-26cancelled 2010-12-21
Successor callsigns
Callsigns held now by people who previously held W5MSK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5MSK, oldest first.
- MC ADAMS JR, HERBERT D TX1996-06-20 → cancelled 2008-06-21
- McAdams, Mark A TX2020-10-16 active