Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9TCB callsign genealogy
Currently held by BASLER, FLOYD 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 W9TCB's current licensee, walking backwards.
- Jacobi, Brian KWIgranted 2013-11-18cancelled 2014-07-29
Successor callsigns
Callsigns held now by people who previously held W9TCB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9TCB, oldest first.
- BASLER, FLOYD J IL1987-12-15 → cancelled 1999-12-16
- Jacobi, Brian K WI2024-07-26 active