Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4KYM callsign genealogy
Currently held by NELSON, JOHN 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 W4KYM's current licensee, walking backwards.
- Nelson, Ronald ONMgranted 2009-02-05cancelled 2010-02-26
Successor callsigns
Callsigns held now by people who previously held W4KYM.
- Nelson, Ronald ONMgranted 2021-12-08
All historical holders
Every license row we've seen with the callsign W4KYM, oldest first.
- NELSON, JOHN W FL1997-08-26 → cancelled 2009-08-27
- Nelson, Ronald O NM2010-02-26 → cancelled 2012-02-28