Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JYK callsign genealogy
Currently held by POLLOCK JR, CHARLES 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 K4JYK's current licensee, walking backwards.
- Pollock, Charles FWIgranted 2026-06-10cancelled 2026-07-11
Successor callsigns
Callsigns held now by people who previously held K4JYK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JYK, oldest first.
- POLLOCK JR, CHARLES F VA1988-09-06 → cancelled 2000-09-07
- Pollock, Charles F WI2026-07-11 active