Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK6FFM callsign genealogy
Currently held by Castro, Omer F
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 KK6FFM's current licensee, walking backwards.
- Castro, Omer FCAgranted 2009-05-05cancelled 2013-06-27
Successor callsigns
Callsigns held now by people who previously held KK6FFM.
- Castro, Omer FCAgranted 2019-04-19