Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1HFS callsign genealogy
Currently held by Keller, Robert C
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 K1HFS's current licensee, walking backwards.
- Keller, Robert CMAgranted 2025-03-04cancelled 2025-04-22
Successor callsigns
Callsigns held now by people who previously held K1HFS.
No current licensee on record previously held this callsign.