Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NM6X callsign genealogy
Currently held by SLYGH, MICHAEL 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 NM6X's current licensee, walking backwards.
- SLYGH, MICHAEL LCAgranted 2007-03-27cancelled 2009-04-25
Successor callsigns
Callsigns held now by people who previously held NM6X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NM6X, oldest first.
- WHIDDON, WILLIAM B CA1996-11-04 → cancelled 2008-11-05
- SLYGH, MICHAEL L NC2019-02-07 active