Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4RM callsign genealogy
Currently held by McNaught II, Ray 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 KM4RM's current licensee, walking backwards.
- McNaught II, Ray ACAgranted 2017-02-15cancelled 2017-04-01
Successor callsigns
Callsigns held now by people who previously held KM4RM.
- Perry Sr, William VMIgranted 1999-01-05cancelled 2008-12-09
All historical holders
Every license row we've seen with the callsign KM4RM, oldest first.
- Perry Sr, William V VA1999-01-05 → cancelled 2003-01-30
- McNaught II, Ray A CA2017-04-01 active