Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1ILV callsign genealogy
Currently held by GROCHOWSKI, MARK 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 W1ILV's current licensee, walking backwards.
- GROCHOWSKI, MARK WCTgranted 1994-03-22cancelled 2004-01-13
Successor callsigns
Callsigns held now by people who previously held W1ILV.
No current licensee on record previously held this callsign.