Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4RTZ callsign genealogy
Currently held by GIRTON, JAY I
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 KK4RTZ'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 KK4RTZ.
- GIRTON, JAY ISCgranted 2015-03-17cancelled 2017-04-11