Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WN5M callsign genealogy
Currently held by KEY, MICHAEL W
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 WN5M's current licensee, walking backwards.
- Merck, John WTXgranted 2003-01-16cancelled 2005-08-09
Successor callsigns
Callsigns held now by people who previously held WN5M.
- KEY, MICHAEL WOKgranted 2003-03-29cancelled 2012-04-03
All historical holders
Every license row we've seen with the callsign WN5M, oldest first.
- KEY, MICHAEL W OK2000-09-01 → cancelled 2003-03-29
- Merck, John W TX2015-06-04 active