Confidence: Medium · Source: FCC ULS · As of 2026-09-12
ND0C callsign genealogy
Currently held by SHIRBROUN, RANDAL M
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 ND0C's current licensee, walking backwards.
- SHIRBROUN, RANDAL MMNgranted 2002-01-18cancelled 2004-11-26
Successor callsigns
Callsigns held now by people who previously held ND0C.
- WHITE JR, GARY ATXgranted 2022-01-11
All historical holders
Every license row we've seen with the callsign ND0C, oldest first.
- WHITE JR, GARY A TX1999-12-14 → cancelled 2002-01-23
- SHIRBROUN, RANDAL M MN2024-08-30 active