Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8SUZ callsign genealogy
Currently held by KNAPPENBERGER, SUSAN A
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 W8SUZ's current licensee, walking backwards.
- KNAPPENBERGER, SUSAN AMIgranted 2023-08-26cancelled 2023-11-10
Successor callsigns
Callsigns held now by people who previously held W8SUZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8SUZ, oldest first.
- COOK, SUSAN M MI2008-12-02 → cancelled 2021-01-08
- KNAPPENBERGER, SUSAN A MI2023-11-10 active