Confidence: Medium · Source: FCC ULS · As of 2026-09-15
K0COA callsign genealogy
Currently held by JOHNSON SR, MARSHALL D
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 K0COA's current licensee, walking backwards.
- Saltzman, Daniel RNVgranted 2026-05-27cancelled 2026-06-16
Successor callsigns
Callsigns held now by people who previously held K0COA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0COA, oldest first.
- JOHNSON SR, MARSHALL D OR2013-03-02 → cancelled 2025-03-05
- Saltzman, Daniel R NV2026-06-16 active