Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9ZSL callsign genealogy
Currently held by Kuehl, Michael A
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 W9ZSL's current licensee, walking backwards.
- Kuehl, Michael AWIgranted 2010-02-03cancelled 2010-03-09
Successor callsigns
Callsigns held now by people who previously held W9ZSL.
No current licensee on record previously held this callsign.