Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0ARO callsign genealogy
Currently held by RENNER, WALTER K
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 K0ARO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K0ARO.
No current licensee on record previously held this callsign.