Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0RTH callsign genealogy
Currently held by TESAR, ROBERT C
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 W0RTH's current licensee, walking backwards.
- Lawter, Mark ENVgranted 2002-12-12cancelled 2003-02-15
Successor callsigns
Callsigns held now by people who previously held W0RTH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0RTH, oldest first.
- TESAR, ROBERT C CO1987-11-24 → cancelled 1999-11-25
- Lawter, Mark E NV2023-02-10 active