Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB7SR callsign genealogy
Currently held by GIEBEL JR, ROBERT A
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 AB7SR's current licensee, walking backwards.
- KJ5WMno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AB7SR.
- GIEBEL JR, ROBERT AFLgranted 2023-08-29