Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JMD callsign genealogy
Currently held by Parker, Chance W
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 K4JMD's current licensee, walking backwards.
- Parker, Chance WMAgranted 2005-02-23cancelled 2005-03-22
Successor callsigns
Callsigns held now by people who previously held K4JMD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JMD, oldest first.
- PARKER, THEODORE L FL1991-05-07 → cancelled 2003-05-08
- Parker, Chance W TX2026-03-17 active