Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4IF callsign genealogy
Currently held by DONELSON, JAMES C
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 AB4IF's current licensee, walking backwards.
- N4RTZno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AB4IF.
- DONELSON, JAMES CFLgranted 2020-11-28