Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5SDD callsign genealogy
Currently held by MC CAULEY, ROY H
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 N5SDD's current licensee, walking backwards.
- Davidson, Stephen DTXgranted 2012-12-21cancelled 2016-03-29
Successor callsigns
Callsigns held now by people who previously held N5SDD.
- MC CAULEY, ROY HTXgranted 2021-12-01
All historical holders
Every license row we've seen with the callsign N5SDD, oldest first.
- MC CAULEY, ROY H TX2001-08-25 → cancelled 2011-08-16
- Davidson, Stephen D TX2026-01-09 active