Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA6UMM callsign genealogy
Currently held by Roughen, Scott D
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 KA6UMM's current licensee, walking backwards.
- Roughen, Scott DCOgranted 2016-05-13cancelled 2016-06-10
Successor callsigns
Callsigns held now by people who previously held KA6UMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA6UMM, oldest first.
- MURKINS, LYLE H CA1987-12-15 → cancelled 1999-12-16
- Roughen, Scott D CO2016-06-10 active