Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF9AL callsign genealogy
Currently held by HELLING, ROBERT B
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 KF9AL's current licensee, walking backwards.
- KA7ZSNno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF9AL.
- HELLING, ROBERT BWAgranted 2001-05-03cancelled 2005-03-25