Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5DUX callsign genealogy
Currently held by Gramling, Gerald 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 K5DUX's current licensee, walking backwards.
- Gramling, Gerald TARgranted 2018-03-07cancelled 2018-03-27
Successor callsigns
Callsigns held now by people who previously held K5DUX.
No current licensee on record previously held this callsign.