Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9MPI callsign genealogy
Currently held by Robertson, David E
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 K9MPI's current licensee, walking backwards.
- Robertson, David EILgranted 2015-11-23cancelled 2016-01-05
Successor callsigns
Callsigns held now by people who previously held K9MPI.
No current licensee on record previously held this callsign.