Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7HF callsign genealogy
Currently held by CHALUP, MICHAEL 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 KC7HF's current licensee, walking backwards.
- CHALUP, MICHAEL SORgranted 2018-04-17cancelled 2023-06-09
Successor callsigns
Callsigns held now by people who previously held KC7HF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7HF, oldest first.
- COOK, ROBERT G NV1987-10-27 → cancelled 1999-10-28
- CHALUP, MICHAEL S OR2023-06-09 active