Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9LYF callsign genealogy
Currently held by Nielsen, Matthew 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 K9LYF's current licensee, walking backwards.
- Nielsen, Matthew AAZgranted 2022-05-11cancelled 2023-03-07
Successor callsigns
Callsigns held now by people who previously held K9LYF.
No current licensee on record previously held this callsign.