Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1TSM callsign genealogy
Currently held by KACHELMEYER, WILLIAM 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 K1TSM's current licensee, walking backwards.
- KACHELMEYER, WILLIAM BINgranted 2012-03-22cancelled 2013-03-02
Successor callsigns
Callsigns held now by people who previously held K1TSM.
No current licensee on record previously held this callsign.