Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4SJK callsign genealogy
Currently held by Krutsinger, Lawrence D
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 KR4SJK's current licensee, walking backwards.
- Krutsinger, Lawrence DGAgranted 2026-05-28cancelled 2026-06-19
Successor callsigns
Callsigns held now by people who previously held KR4SJK.
No current licensee on record previously held this callsign.