Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9PGD callsign genealogy
Currently held by DUMLAO, MICHAEL S
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 KB9PGD's current licensee, walking backwards.
- Dumlao, Michael SINgranted 2017-09-20cancelled 2018-10-27
Successor callsigns
Callsigns held now by people who previously held KB9PGD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9PGD, oldest first.
- DUMLAO, MICHAEL S IN1996-12-27 → cancelled 2008-12-30
- Dumlao, Michael S IN2018-10-27 active