Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA0MDW callsign genealogy
Currently held by Klotz, Christian
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 WA0MDW's current licensee, walking backwards.
- Klotz, ChristianCOgranted 2013-04-03cancelled 2019-01-01
Successor callsigns
Callsigns held now by people who previously held WA0MDW.
- Klotz, ChristianCOgranted 2019-06-25