Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ0NM callsign genealogy
Currently held by MC DOWELL, JOHN S
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 KJ0NM's current licensee, walking backwards.
- MC DOWELL, JOHN SILgranted 1996-02-08cancelled 2005-05-13
Successor callsigns
Callsigns held now by people who previously held KJ0NM.
- MC DOWELL, JOHN SNVgranted 2021-08-20