Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5SBD callsign genealogy
Currently held by Davis, John R
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 W5SBD's current licensee, walking backwards.
- Davis, John RTXgranted 2022-05-26cancelled 2022-09-07
Successor callsigns
Callsigns held now by people who previously held W5SBD.
- Davis, John RTXgranted 2024-04-13