Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4QU callsign genealogy
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 KR4QU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KR4QU.
- BROWN JR, THOMAS JGAgranted 1994-07-08cancelled 2006-04-14