Confidence: Medium · Source: FCC ULS · As of 2026-09-11
N4MPO callsign genealogy
Currently held by Bush, Jonathan 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 N4MPO's current licensee, walking backwards.
- Bush, Jonathan MALgranted 2014-04-14cancelled 2017-01-07
Successor callsigns
Callsigns held now by people who previously held N4MPO.
No current licensee on record previously held this callsign.