Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB6TNF callsign genealogy
Currently held by SULLIVAN, JAMES 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 WB6TNF's current licensee, walking backwards.
- SULLIVAN, JAMES MCAgranted 1996-07-16cancelled 2006-02-04
Successor callsigns
Callsigns held now by people who previously held WB6TNF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB6TNF, oldest first.
- SULLIVAN, ROBERT J CA1996-09-24 → cancelled 2005-12-24
- SULLIVAN, JAMES M CA2026-01-30 active