Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5OBO callsign genealogy
Currently held by Mcdonald, Thomas 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 W5OBO's current licensee, walking backwards.
- Mcdonald, Thomas MVAgranted 2018-02-02cancelled 2018-02-27
Successor callsigns
Callsigns held now by people who previously held W5OBO.
No current licensee on record previously held this callsign.