Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K3ZSM callsign genealogy
Currently held by Mars, David 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 K3ZSM's current licensee, walking backwards.
- Mars, David ENVgranted 2013-06-21cancelled 2013-07-09
Successor callsigns
Callsigns held now by people who previously held K3ZSM.
No current licensee on record previously held this callsign.