Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0JJF callsign genealogy
Currently held by COMSTOCK, JAMES D
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 K0JJF's current licensee, walking backwards.
- COMSTOCK, JAMES DCOgranted 2020-05-14cancelled 2020-06-01
Successor callsigns
Callsigns held now by people who previously held K0JJF.
No current licensee on record previously held this callsign.