Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7MKA callsign genealogy
Currently held by KING, MARTIN 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 N7MKA's current licensee, walking backwards.
- KING, MARTIN JWAgranted 2013-02-04cancelled 2015-12-26
Successor callsigns
Callsigns held now by people who previously held N7MKA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7MKA, oldest first.
- OLSEN, DAVID L WA1999-02-04 → cancelled 2011-02-05
- KING, MARTIN J WA2015-12-26 active