Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9GC callsign genealogy
Currently held by MARX, DAVID P
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 N9GC's current licensee, walking backwards.
- MCGRATH III, THOMAS WILgranted 2009-08-12cancelled 2013-08-06
Successor callsigns
Callsigns held now by people who previously held N9GC.
- VANGSNESS, CARL JMNgranted 2011-07-02cancelled 2012-02-22
All historical holders
Every license row we've seen with the callsign N9GC, oldest first.
- MARX, DAVID P WI1997-05-20 → cancelled 2009-05-21
- VANGSNESS, CARL J MN2009-06-09 → cancelled 2011-07-02
- McGrath III, Thomas W IL2023-05-09 active