Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9MKA callsign genealogy
Currently held by Griggs, Robert A
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 W9MKA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W9MKA.
No current licensee on record previously held this callsign.