Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JDU callsign genealogy
Currently held by MC DEVITT, EDWARD B
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 K4JDU's current licensee, walking backwards.
- URBACH, JOHN DTNgranted 2018-03-28cancelled 2021-01-26
Successor callsigns
Callsigns held now by people who previously held K4JDU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JDU, oldest first.
- MC DEVITT, EDWARD B VA1994-04-19 → cancelled 2006-04-20
- URBACH, JOHN D TN2021-01-26 active