Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9ABI callsign genealogy
Currently held by VAUGHN, EDWIN P
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 W9ABI's current licensee, walking backwards.
- Kobishop, John PWIgranted 2018-06-19cancelled 2022-02-01
Successor callsigns
Callsigns held now by people who previously held W9ABI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9ABI, oldest first.
- VAUGHN, EDWIN P IL1988-08-16 → cancelled 2000-08-17
- Kobishop, John P WI2022-02-01 active