Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9FHN callsign genealogy
Currently held by NIELSON, FRANK
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 K9FHN's current licensee, walking backwards.
- NIELSON, FRANKUTgranted 2016-10-27cancelled 2017-10-03
Successor callsigns
Callsigns held now by people who previously held K9FHN.
No current licensee on record previously held this callsign.