Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA5RTX callsign genealogy
Currently held by MILLER, MARK J
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 KA5RTX's current licensee, walking backwards.
- MILLER, MARK JTXgranted 2021-12-17cancelled 2022-01-07
Successor callsigns
Callsigns held now by people who previously held KA5RTX.
- MILLER, MARK JTXgranted 2022-01-25