Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1TBN callsign genealogy
Currently held by Sporny, David D
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 W1TBN's current licensee, walking backwards.
- Sporny, David DMAgranted 2011-09-16cancelled 2013-08-31
Successor callsigns
Callsigns held now by people who previously held W1TBN.
No current licensee on record previously held this callsign.