Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1MCP callsign genealogy
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 N1MCP's current licensee, walking backwards.
- MARSHALL, DAVID BMDgranted 2010-11-18cancelled 2016-04-22
Successor callsigns
Callsigns held now by people who previously held N1MCP.
All historical holders
Every license row we've seen with the callsign N1MCP, oldest first.
- McCarthy, David A RI2004-06-16 → cancelled 2006-06-09
- MARSHALL, DAVID B MD2026-03-10 active
- —— → cancelled 1998-11-24