Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9MYO callsign genealogy
Currently held by Johnson, William H
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 KD9MYO's current licensee, walking backwards.
- Johnson, William HWIgranted 2018-06-12cancelled 2019-04-12
Successor callsigns
Callsigns held now by people who previously held KD9MYO.
No current licensee on record previously held this callsign.