Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4SRK callsign genealogy
Currently held by Kruk, Ronald E
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 K4SRK's current licensee, walking backwards.
- Sorokti, Craig PNCgranted 2026-02-26cancelled 2026-03-17
Successor callsigns
Callsigns held now by people who previously held K4SRK.
- Kruk, Ronald ENCgranted 2011-10-18cancelled 2023-10-19
All historical holders
Every license row we've seen with the callsign K4SRK, oldest first.
- Kruk, Ronald E NC2007-02-09 → cancelled 2011-10-18
- Sorokti, Craig P NC2026-03-17 active