Confidence: Medium · Source: FCC ULS · As of 2026-09-15
KK7JKR callsign genealogy
Currently held by NAUMANN, HELMUTH 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 KK7JKR's current licensee, walking backwards.
- NAUMANN, HELMUTH DUTgranted 2022-02-23cancelled 2022-11-29
Successor callsigns
Callsigns held now by people who previously held KK7JKR.
No current licensee on record previously held this callsign.