Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4CMU callsign genealogy
Currently held by GASS, JEREMY
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 K4CMU's current licensee, walking backwards.
- GASS, JEREMYTNgranted 2023-12-29cancelled 2024-01-23
Successor callsigns
Callsigns held now by people who previously held K4CMU.
- Fowler 528, Thomas NNCgranted 2017-10-20
All historical holders
Every license row we've seen with the callsign K4CMU, oldest first.
- FOWLER JR, THOMAS N NC2017-03-03 → cancelled 2017-10-20
- GASS, JEREMY TN2024-01-23 active