Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF7TJK callsign genealogy
Currently held by Crum, John A
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 KF7TJK's current licensee, walking backwards.
- Crum, John ANVgranted 2011-12-09cancelled 2012-01-04
Successor callsigns
Callsigns held now by people who previously held KF7TJK.
No current licensee on record previously held this callsign.