Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6ZTF callsign genealogy
Currently held by HARGRAVES, JOHN 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 K6ZTF's current licensee, walking backwards.
- Hargraves, John RCAgranted 2011-03-18cancelled 2011-04-12
Successor callsigns
Callsigns held now by people who previously held K6ZTF.
No current licensee on record previously held this callsign.