Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5TTL callsign genealogy
Currently held by SCHOENEFELD, KEITH 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 W5TTL's current licensee, walking backwards.
- Schoenefeld, Keith PILgranted 2011-01-14cancelled 2011-02-15
Successor callsigns
Callsigns held now by people who previously held W5TTL.
- SCHOENEFELD, KEITH PTXgranted 2017-02-22