Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3TWH callsign genealogy
Currently held by POT, JOHN
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 W3TWH's current licensee, walking backwards.
- Pot, Eli JPAgranted 2010-03-04cancelled 2010-04-02
Successor callsigns
Callsigns held now by people who previously held W3TWH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3TWH, oldest first.
- STRAUSS, JOHN F PA1993-11-30 → cancelled 2005-12-01
- POT, JOHN PA2020-11-23 active