Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4JDH callsign genealogy
Currently held by HAWKINS, JOSHUA D
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 KB4JDH's current licensee, walking backwards.
- HAWKINS, JOSHUA DSCgranted 2016-02-08cancelled 2018-06-19
Successor callsigns
Callsigns held now by people who previously held KB4JDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4JDH, oldest first.
- SACKS, MARK D FL1990-12-04 → cancelled 2002-12-05
- HAWKINS, JOSHUA D SC2018-06-19 active