Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7NF 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 AC7NF's current licensee, walking backwards.
- HELLING, ROBERT BWAgranted 1991-05-14cancelled 2001-05-03
- KA7ZSNno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AC7NF.
- HELLING, ROBERT BWAgranted 2025-04-08