Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9ZRT callsign genealogy
Currently held by Duckworth, Jeffrey 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 W9ZRT's current licensee, walking backwards.
- Duckworth, Jeffrey SILgranted 2019-05-10cancelled 2019-12-31
Successor callsigns
Callsigns held now by people who previously held W9ZRT.
No current licensee on record previously held this callsign.