Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA4MK callsign genealogy
Currently held by Keegan Jr, Leonard 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 NA4MK's current licensee, walking backwards.
- Keegan, Leonard MFLgranted 2008-02-01cancelled 2008-05-24
Successor callsigns
Callsigns held now by people who previously held NA4MK.
No current licensee on record previously held this callsign.