Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9DTL callsign genealogy
Currently held by MILLER, CHARLES R
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 W9DTL's current licensee, walking backwards.
- Ienatsch, William JWIgranted 2015-09-28cancelled 2015-10-20
Successor callsigns
Callsigns held now by people who previously held W9DTL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9DTL, oldest first.
- MILLER, CHARLES R IL1990-02-20 → cancelled 2002-03-07
- Ienatsch, William J WA2025-09-04 active