Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4JM callsign genealogy
Currently held by LARKIN, ARTHUR V
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 KN4JM's current licensee, walking backwards.
- MANUEL, JEFFREYALgranted 2013-07-08cancelled 2019-04-30
- KC4KQVno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KN4JM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KN4JM, oldest first.
- LARKIN, ARTHUR V FL2000-03-03 → cancelled 2012-05-30
- MANUEL, JEFFREY FL2019-04-30 active