Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7FJB callsign genealogy
Currently held by Simons, Mark R
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 K7FJB's current licensee, walking backwards.
- Simons, Mark RAZgranted 2021-12-06cancelled 2022-05-06
Successor callsigns
Callsigns held now by people who previously held K7FJB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7FJB, oldest first.
- Baron, Frederick J OR2006-03-31 → cancelled 2018-04-03
- Simons, Mark R AZ2022-05-06 active