Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8DMT callsign genealogy
Currently held by MALBURG, ANDREW 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 W8DMT's current licensee, walking backwards.
- MALBURG, ANDREW JMIgranted 2022-08-16cancelled 2024-11-22
Successor callsigns
Callsigns held now by people who previously held W8DMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8DMT, oldest first.
- COLLICOTT, HOWARD E WA2007-12-12 → cancelled 2019-12-13
- MALBURG, ANDREW J MI2024-11-22 active