Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4IK callsign genealogy
Currently held by SUBICH, JOSEPH T
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 K4IK's current licensee, walking backwards.
- Yawn, John JTNgranted 1999-03-05cancelled 2007-07-07
Successor callsigns
Callsigns held now by people who previously held K4IK.
- SUBICH, JOEFLgranted 2025-03-21
All historical holders
Every license row we've seen with the callsign K4IK, oldest first.
- KOZAK, BOLISH J FL1988-08-30 → cancelled 1996-01-31
- SUBICH, JOSEPH T FL2000-09-01 → cancelled 2005-06-18
- Yawn, John J TN2017-06-03 active