Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TNN callsign genealogy
Currently held by Williams, James E
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 W4TNN's current licensee, walking backwards.
- Greeson, William FTNgranted 2006-11-02cancelled 2007-01-04
Successor callsigns
Callsigns held now by people who previously held W4TNN.
- Williams, James ENCgranted 2019-02-28
All historical holders
Every license row we've seen with the callsign W4TNN, oldest first.
- Williams, James E NC1999-05-05 → cancelled 2004-08-09
- GREESON, WILLIAM F TN2016-11-08 active