Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1KFR callsign genealogy
Currently held by Seredejko, Michael 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 KB1KFR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KB1KFR.
- Seredejko, Michael DMDgranted 2015-07-03cancelled 2015-09-29
All historical holders
Every license row we've seen with the callsign KB1KFR, oldest first.
- Seredejko, Michael D MA2013-06-13 → cancelled 2015-07-03
- Seredejko, Michael D CA2020-06-23 active