Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC8NOU callsign genealogy
Currently held by Breyer, Martin R
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 KC8NOU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC8NOU.
- Breyer, Martin ROHgranted 2017-02-14cancelled 2017-03-07
All historical holders
Every license row we've seen with the callsign KC8NOU, oldest first.
- Breyer, Martin R OH1999-12-21 → cancelled 2007-03-27
- Breyer, Martin R OH2017-03-07 active