Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4BMJ callsign genealogy
Currently held by Lederer, Joe K
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 K4BMJ's current licensee, walking backwards.
- Lederer, Joe KNCgranted 2016-10-03cancelled 2019-08-02
Successor callsigns
Callsigns held now by people who previously held K4BMJ.
No current licensee on record previously held this callsign.