Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0TXX callsign genealogy
Currently held by Rittmiller, David 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 W0TXX's current licensee, walking backwards.
- Rittmiller, David ANDgranted 2010-06-02cancelled 2013-11-09
Successor callsigns
Callsigns held now by people who previously held W0TXX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0TXX, oldest first.
- MILLER, FRANK W MO1995-01-12 → cancelled 2007-01-13
- Rittmiller, David A ND2023-10-31 active