Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JMC callsign genealogy
Currently held by KEMP, DAVID 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 W4JMC's current licensee, walking backwards.
- Clements, John MKYgranted 2018-01-25cancelled 2019-02-14
Successor callsigns
Callsigns held now by people who previously held W4JMC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4JMC, oldest first.
- KEMP, DAVID L FL2006-04-05 → cancelled 2018-06-29
- Clements, John M KY2019-02-14 active