Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0ROQ callsign genealogy
Currently held by WALLIS, DONALD C
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 W0ROQ's current licensee, walking backwards.
- Hartzog, Robert BCOgranted 2015-01-16cancelled 2018-10-27
Successor callsigns
Callsigns held now by people who previously held W0ROQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0ROQ, oldest first.
- WALLIS, DONALD C CO1997-05-19 → cancelled 2009-05-20
- Hartzog, Robert B CO2018-10-27 active