Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KE9ERF callsign genealogy
Currently held by Guico, Robert R
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 KE9ERF'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 KE9ERF.
- Guico, Robert RILgranted 2026-03-24