Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4FOO callsign genealogy
Currently held by SIMMONS JR, FRANK
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 KK4FOO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KK4FOO.
- SIMMONS JR, FRANKVAgranted 2013-03-01cancelled 2016-02-19