Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5MLD callsign genealogy
Currently held by SUMLIN, RUBY 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 KB5MLD's current licensee, walking backwards.
- Duke, Mary LTXgranted 2008-04-25cancelled 2008-05-16
Successor callsigns
Callsigns held now by people who previously held KB5MLD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5MLD, oldest first.
- SUMLIN, RUBY J LA1990-04-17 → cancelled 2002-04-18
- Duke, Mary L TX2018-03-29 active