Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB3SG callsign genealogy
Currently held by Herrlich, Douglas I
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 AB3SG's current licensee, walking backwards.
- Herrlich, Douglas IPAgranted 2013-04-26cancelled 2013-05-08
Successor callsigns
Callsigns held now by people who previously held AB3SG.
No current licensee on record previously held this callsign.