Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD0OUM callsign genealogy
Currently held by Palmer, Michael 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 KD0OUM's current licensee, walking backwards.
- Palmer, Michael WCOgranted 2010-05-19cancelled 2011-06-02
Successor callsigns
Callsigns held now by people who previously held KD0OUM.
- Palmer, Michael WCOgranted 2021-09-11