Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9CD callsign genealogy
Currently held by CONSTANT JR, CLEMENT C
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 W9CD's current licensee, walking backwards.
- Formea, James DWIgranted 2003-02-07cancelled 2012-06-16
Successor callsigns
Callsigns held now by people who previously held W9CD.
- Addison, Donald BWIgranted 2020-02-27
All historical holders
Every license row we've seen with the callsign W9CD, oldest first.
- CONSTANT JR, CLEMENT C IL1998-04-30 → cancelled 2002-04-26
- Addison, Donald B WI2008-12-30 → cancelled 2010-05-25
- Formea, James D WI2022-06-01 active