Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3DM callsign genealogy
Currently held by FROST, ROBERT T
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 K3DM's current licensee, walking backwards.
- FROST JR, ROBERT TPAgranted 2008-07-30cancelled 2010-06-26
Successor callsigns
Callsigns held now by people who previously held K3DM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3DM, oldest first.
- FROST, ROBERT T VA2006-09-07 → cancelled 2009-02-08
- FROST JR, ROBERT T PA2020-07-23 active