Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1TCW callsign genealogy
Currently held by Borko, 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 W1TCW's current licensee, walking backwards.
- Borko, Michael DFLgranted 2013-08-13cancelled 2013-08-31
Successor callsigns
Callsigns held now by people who previously held W1TCW.
- Borko, Michael DTNgranted 2024-01-23