Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0SPW callsign genealogy
Currently held by BERTRAM, EXA B
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 K0SPW's current licensee, walking backwards.
- WALL, SUSAN PCOgranted 2011-05-26cancelled 2011-07-01
Successor callsigns
Callsigns held now by people who previously held K0SPW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0SPW, oldest first.
- BERTRAM, EXA B CO1988-10-18 → cancelled 2000-10-19
- WALL, SUSAN P CO2021-04-06 active