Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5ARP callsign genealogy
Currently held by TIERCE, MITCHELL
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 K5ARP's current licensee, walking backwards.
- McCollum, Matthew LTXgranted 2023-02-15cancelled 2023-05-13
Successor callsigns
Callsigns held now by people who previously held K5ARP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5ARP, oldest first.
- TIERCE, MITCHELL MS2011-01-25 → cancelled 2023-01-26
- McCollum, Matthew L TX2023-05-13 active