Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8SK callsign genealogy
Currently held by TISCHER, EDWARD W
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 K8SK's current licensee, walking backwards.
- TREPICONE, DONALD DMIgranted 2017-04-15cancelled 2021-11-27
Successor callsigns
Callsigns held now by people who previously held K8SK.
- TISCHER, EDWARD WOHgranted 2019-11-05
All historical holders
Every license row we've seen with the callsign K8SK, oldest first.
- TISCHER, EDWARD W OH2014-12-23 → cancelled 2019-11-05
- TREPICONE, DONALD D MI2021-11-27 active