Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB3SP callsign genealogy
Currently held by SELL, JOHN 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 KB3SP's current licensee, walking backwards.
- SELL, JOHN RWIgranted 1998-01-09cancelled 2004-07-16
Successor callsigns
Callsigns held now by people who previously held KB3SP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB3SP, oldest first.
- SELL, JOHN J MD1996-03-19 → cancelled 2002-01-18
- SELL, JOHN R WI2024-05-02 active