Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM5DG callsign genealogy
Currently held by SAM, JOE M
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 KM5DG's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KM5DG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM5DG, oldest first.
- SAM, JOE M TX2005-10-18 → cancelled 2018-01-17
- GUEMMER, DONALD G TX2024-10-22 active