Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1JCT callsign genealogy
Currently held by CIABASZEWSKI, WILLIAM 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 W1JCT's current licensee, walking backwards.
- Taylor, John COHgranted 2017-09-11cancelled 2018-08-24
Successor callsigns
Callsigns held now by people who previously held W1JCT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1JCT, oldest first.
- CIABASZEWSKI, WILLIAM R MA2006-04-20 → cancelled 2018-06-08
- Taylor, John C OH2018-08-24 active