Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9RLO callsign genealogy
Currently held by Yerkes, Warren H
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 W9RLO's current licensee, walking backwards.
- Yerkes, Warren HAZgranted 2018-05-23cancelled 2020-05-15
Successor callsigns
Callsigns held now by people who previously held W9RLO.
No current licensee on record previously held this callsign.