Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TDD callsign genealogy
Currently held by JOHNSON, REX E
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 W4TDD's current licensee, walking backwards.
- Johnson, Dennis CKYgranted 2007-12-19cancelled 2008-12-05
Successor callsigns
Callsigns held now by people who previously held W4TDD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4TDD, oldest first.
- JOHNSON, REX E KY1996-08-23 → cancelled 2008-08-26
- JOHNSON, DENNIS C KY2018-09-13 active