Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9AMR callsign genealogy
Currently held by RATERMANN, ANDREA 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 K9AMR's current licensee, walking backwards.
- RATERMANN, ANDREA MILgranted 2011-07-19cancelled 2021-03-19
Successor callsigns
Callsigns held now by people who previously held K9AMR.
- Brown, JDWAgranted 2010-06-04cancelled 2022-06-07
All historical holders
Every license row we've seen with the callsign K9AMR, oldest first.
- Brown, JD MO2008-02-29 → cancelled 2010-06-04
- RATERMANN, ANDREA M IL2021-03-19 active