Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4M callsign genealogy
Currently held by Gartner Jr, Arthur E
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 KA4M's current licensee, walking backwards.
- Gartner Jr, Arthur EGAgranted 2002-07-09cancelled 2003-05-13
Successor callsigns
Callsigns held now by people who previously held KA4M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA4M, oldest first.
- SABEL, AUGUST J FL1991-04-23 → cancelled 2003-04-24
- Gartner Jr, Arthur E AL2023-02-15 active