Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9CF callsign genealogy
Currently held by Martin, Mark L
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 K9CF's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K9CF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9CF, oldest first.
- DANIELSEN, DANIEL IL1987-09-08 → cancelled 1999-09-10
- Martin, Mark L VA2022-01-25 active