Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4YI callsign genealogy
Currently held by Krummel, Jason S
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 KX4YI's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KX4YI.
- Krummel, Jason SALgranted 2020-05-29cancelled 2021-05-14