Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JMW callsign genealogy
Currently held by WALDEN, JAMES M
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 K4JMW's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4JMW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JMW, oldest first.
- WALDEN, JAMES M AL2008-11-13 → cancelled 2020-11-14
- Wardrip, Jacob M KY2021-02-13 active