Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5ADM callsign genealogy
Currently held by COLSON, MARY I
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 KC5ADM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC5ADM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC5ADM, oldest first.
- COLSON, MARY I TX2003-06-05 → cancelled 2015-06-06
- Adams, Charles A TX2020-02-04 active