Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3DO callsign genealogy
Currently held by ACKERMAN, MARK I
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 N3DO's current licensee, walking backwards.
- DRIGGERS, JOSEPH LALgranted 2003-01-30cancelled 2009-12-08
Successor callsigns
Callsigns held now by people who previously held N3DO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3DO, oldest first.
- ACKERMAN, MARK I PA2006-09-08 → cancelled 2007-09-25
- Driggers, Jessica L WA2019-10-16 active