Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD5RQ callsign genealogy
Currently held by LUDWIG, UDO M
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 AD5RQ's current licensee, walking backwards.
- LUDWIG, UDO M PTXgranted 1995-06-21cancelled 2004-06-22
- KC5JVRno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AD5RQ.
No current licensee on record previously held this callsign.