Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ECD callsign genealogy
Currently held by DENNISON, BYRON L
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 W4ECD's current licensee, walking backwards.
- RITZMAN, ERIC STNgranted 2012-08-07cancelled 2012-08-28
Successor callsigns
Callsigns held now by people who previously held W4ECD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ECD, oldest first.
- DENNISON, BYRON L MA1996-02-22 → cancelled 2008-02-23
- RITZMAN, ERIC S TN2023-02-18 active