Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ARR callsign genealogy
Currently held by Ladner, Robert 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 K0ARR's current licensee, walking backwards.
- HAMBLY, ELAINE SCOgranted 2019-04-05cancelled 2022-09-13
Successor callsigns
Callsigns held now by people who previously held K0ARR.
- Rich, Adam RMOgranted 2018-07-03
All historical holders
Every license row we've seen with the callsign K0ARR, oldest first.
- Ladner, Robert W KS2004-10-28 → cancelled 2017-01-26
- Rich, Adam R MO2017-03-31 → cancelled 2018-07-03
- HAMBLY, ELAINE S CO2022-09-13 active