Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3RTH callsign genealogy
Currently held by Hesse, Robert T
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 W3RTH's current licensee, walking backwards.
- Werth, Michael ACTgranted 2019-12-11cancelled 2019-12-31
Successor callsigns
Callsigns held now by people who previously held W3RTH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3RTH, oldest first.
- Hesse, Robert T MD2007-05-01 → cancelled 2019-05-02
- Werth, Michael A CT2019-12-31 active