Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7KTF callsign genealogy
Currently held by Frantzen, Jon 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 K7KTF's current licensee, walking backwards.
- Frantzen, Jon FWAgranted 2016-10-20cancelled 2021-08-17
Successor callsigns
Callsigns held now by people who previously held K7KTF.
No current licensee on record previously held this callsign.