Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0STK callsign genealogy
Currently held by Kostecke III, Stephen T
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 K0STK's current licensee, walking backwards.
- Kostecke III, Stephen TNDgranted 2011-05-10cancelled 2011-09-13
Successor callsigns
Callsigns held now by people who previously held K0STK.
No current licensee on record previously held this callsign.