Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9REJ callsign genealogy
Currently held by Greenblatt, Matthew J
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 KC9REJ'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 KC9REJ.
- Greenblatt, Matthew JWIgranted 2010-01-30cancelled 2011-02-01