Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4YAJ callsign genealogy
Currently held by Rosenfeld, Jay 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 K4YAJ's current licensee, walking backwards.
- Rosenfeld, Jay AFLgranted 2012-02-03cancelled 2012-02-22
Successor callsigns
Callsigns held now by people who previously held K4YAJ.
No current licensee on record previously held this callsign.