Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF9ML callsign genealogy
Currently held by GRAETTINGER JR, JOHN S
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 KF9ML's current licensee, walking backwards.
- KF4SKno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF9ML.
- GRAETTINGER JR, JOHN SMIgranted 2024-01-03