Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5TTR callsign genealogy
Currently held by SANDBERG, WILLIAM P
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 W5TTR's current licensee, walking backwards.
- SANDBERG, WILLIAM PTXgranted 2011-02-17cancelled 2011-03-12
Successor callsigns
Callsigns held now by people who previously held W5TTR.
No current licensee on record previously held this callsign.