Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6IO callsign genealogy
Currently held by Saunders, Mark A
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 K6IO's current licensee, walking backwards.
- Saunders, Mark ACAgranted 2016-04-13cancelled 2024-05-03
Successor callsigns
Callsigns held now by people who previously held K6IO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6IO, oldest first.
- KOHL, OTTO A FL2012-01-26 → cancelled 2024-04-16
- Saunders, Mark A CA2024-05-03 active