Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4UGR callsign genealogy
Currently held by CRISALL, JAMES G
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 KF4UGR's current licensee, walking backwards.
- CRISALL, JAMES Gcancelled 1997-10-08
Successor callsigns
Callsigns held now by people who previously held KF4UGR.
No current licensee on record previously held this callsign.