Confidence: Medium · Source: FCC ULS · As of 2026-09-12
ND7A callsign genealogy
Currently held by BROWN, MARK 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 ND7A's current licensee, walking backwards.
- RIESLAND, CLARK WMTgranted 2003-04-08cancelled 2004-07-16
Successor callsigns
Callsigns held now by people who previously held ND7A.
- BROWN, MARK JCOgranted 2002-06-25cancelled 2009-08-14
All historical holders
Every license row we've seen with the callsign ND7A, oldest first.
- BROWN, MARK J CO2001-08-25 → cancelled 2002-06-25
- RIESLAND, CLARK W MT2025-06-28 active