Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4JMK callsign genealogy
Currently held by JAMERSON, THOMAS 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 N4JMK's current licensee, walking backwards.
- Kreeger, Justin MNCgranted 2012-10-25cancelled 2015-04-04
Successor callsigns
Callsigns held now by people who previously held N4JMK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4JMK, oldest first.
- JAMERSON, THOMAS D VA1994-12-22 → cancelled 2006-12-23
- Kreeger, Justin M VA2025-08-05 active