Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0GRC callsign genealogy
Currently held by SULLIVAN, MICHAEL F
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 K0GRC's current licensee, walking backwards.
- SULLIVAN, MICHAEL FCOgranted 2012-08-28cancelled 2012-09-15
Successor callsigns
Callsigns held now by people who previously held K0GRC.
No current licensee on record previously held this callsign.