Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA9O callsign genealogy
Currently held by SEEFELD, JERRY J
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 WA9O's current licensee, walking backwards.
- Borsilli, Joe AINgranted 2020-05-26cancelled 2020-10-06
Successor callsigns
Callsigns held now by people who previously held WA9O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA9O, oldest first.
- SEEFELD, JERRY J WI2008-06-04 → cancelled 2020-07-15
- Borsilli, Joe A IN2020-10-06 active