Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9ESI callsign genealogy
Currently held by HEPP, SIDNEY E
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 K9ESI's current licensee, walking backwards.
- HEPP, SIDNEY EILgranted 2023-02-24cancelled 2026-04-07
Successor callsigns
Callsigns held now by people who previously held K9ESI.
No current licensee on record previously held this callsign.