Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7OTC callsign genealogy
Currently held by BARNES, CHARLES 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 W7OTC's current licensee, walking backwards.
- Sullivan, Teresa MORgranted 2013-12-17cancelled 2014-01-17
Successor callsigns
Callsigns held now by people who previously held W7OTC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7OTC, oldest first.
- BARNES, CHARLES H CA1997-01-28 → cancelled 2008-12-19
- Sullivan, Teresa M OR2023-12-27 active