Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR3KAT callsign genealogy
Currently held by Katterjohn, Karl R
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 KR3KAT's current licensee, walking backwards.
- Katterjohn, Karl RMDgranted 2006-10-27cancelled 2006-11-17
Successor callsigns
Callsigns held now by people who previously held KR3KAT.
No current licensee on record previously held this callsign.