Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3AAF callsign genealogy
Currently held by GUSS, JOHN T
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 N3AAF's current licensee, walking backwards.
- Brotze, Grant HPAgranted 2022-05-12cancelled 2022-06-18
Successor callsigns
Callsigns held now by people who previously held N3AAF.
- GUSS, JOHN TPAgranted 2020-04-03
All historical holders
Every license row we've seen with the callsign N3AAF, oldest first.
- GUSS, JOHN T PA1999-08-06 → cancelled 2000-06-30
- SUMNER, FREDERICK R PA2008-02-09 → cancelled 2020-02-11
- Brotze, Grant H MA2022-06-18 active