Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB0YHX callsign genealogy
Currently held by FOSTER, GEOFFREY P
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 KB0YHX's current licensee, walking backwards.
- KD0ODTcancelledCarlton County Radio AmateursMNgranted 2011-04-07cancelled 2013-02-09
Successor callsigns
Callsigns held now by people who previously held KB0YHX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB0YHX, oldest first.
- FOSTER, GEOFFREY P MN2006-06-02 → cancelled 2010-12-28
- Carlton County Radio Amateurs MN2023-06-03 active