Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2FJM callsign genealogy
Currently held by Margron, Frederick J
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 K2FJM's current licensee, walking backwards.
- Margron, Frederick JNJgranted 2011-08-17cancelled 2011-09-07
Successor callsigns
Callsigns held now by people who previously held K2FJM.
No current licensee on record previously held this callsign.