Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0LTO callsign genealogy
Currently held by RADEMAKER, A DOUGLAS
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 W0LTO's current licensee, walking backwards.
- RADEMAKER, A DOUGLASTXgranted 1992-08-18cancelled 2002-03-08
Successor callsigns
Callsigns held now by people who previously held W0LTO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0LTO, oldest first.
- RADEMAKER, ADRIAN IA1997-10-28 → cancelled 2001-02-04
- RADEMAKER, A DOUGLAS TX2021-12-09 active