Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0TXM callsign genealogy
Currently held by OLSEN, JACK 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 K0TXM's current licensee, walking backwards.
- OLSEN, JACK AMNgranted 2008-01-02cancelled 2008-01-29
Successor callsigns
Callsigns held now by people who previously held K0TXM.
No current licensee on record previously held this callsign.