Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9MLS callsign genealogy
Currently held by Florence, Thomas N
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 KB9MLS's current licensee, walking backwards.
- Florence, Thomas NINgranted 2017-08-03cancelled 2018-10-19
Successor callsigns
Callsigns held now by people who previously held KB9MLS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9MLS, oldest first.
- BLACKBURN, MICHAEL T WI2006-01-25 → cancelled 2018-01-18
- Florence, Thomas N IN2018-10-19 active