Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9ABG callsign genealogy
Currently held by Karlinsey, Seth K
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 W9ABG's current licensee, walking backwards.
- Karlinsey, Seth KTXgranted 2022-01-18cancelled 2024-04-30
Successor callsigns
Callsigns held now by people who previously held W9ABG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9ABG, oldest first.
- Antenna Builders Guild IL2011-03-18 → cancelled 2023-03-21
- Karlinsey, Seth K TX2024-04-30 active