Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0BTR callsign genealogy
Currently held by CURTISS, ROBERT J
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 N0BTR's current licensee, walking backwards.
- Anderson, Mark DNDgranted 2017-02-16cancelled 2017-03-07
Successor callsigns
Callsigns held now by people who previously held N0BTR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0BTR, oldest first.
- CURTISS, ROBERT J MN1998-10-13 → cancelled 2010-10-14
- Anderson, Mark D ND2017-03-07 active