Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA9DS callsign genealogy
Currently held by Sibon, Douglas S
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 NA9DS's current licensee, walking backwards.
- Sibon, Douglas SILgranted 2011-11-29cancelled 2012-12-21
Successor callsigns
Callsigns held now by people who previously held NA9DS.
- Sibon, Douglas SILgranted 2019-06-22