Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9ML callsign genealogy
Currently held by Chromzack, Thomas 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 K9ML's current licensee, walking backwards.
- Chromzack, Thomas BILgranted 2003-05-30cancelled 2007-06-23
Successor callsigns
Callsigns held now by people who previously held K9ML.
- LOGSDON, MARK SALgranted 2025-04-01
All historical holders
Every license row we've seen with the callsign K9ML, oldest first.
- LOGSDON, MARK S AL1995-12-08 → cancelled 2005-06-03
- Chromzack, Thomas B IL2017-04-11 active