Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD7RWR callsign genealogy
Currently held by Rothermund, Ryan W
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 KD7RWR's current licensee, walking backwards.
- Rothermund, Ryan WAZgranted 2013-09-11cancelled 2013-10-01
Successor callsigns
Callsigns held now by people who previously held KD7RWR.
All historical holders
Every license row we've seen with the callsign KD7RWR, oldest first.
- WORTH, MICHAEL L ID2002-06-19 → cancelled 2002-07-09
- Rothermund, Ryan W AZ2013-10-01 → cancelled 2017-08-26