Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4CRZ callsign genealogy
Currently held by Blair, Timothy 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 KJ4CRZ'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 KJ4CRZ.
- Blair, Timothy RTNgranted 2008-03-14cancelled 2010-04-06