Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MDC callsign genealogy
Currently held by KRICHINSKY, KEITH U
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 W3MDC's current licensee, walking backwards.
- Krichinsky, Keith UMDgranted 2001-11-20cancelled 2004-07-27
Successor callsigns
Callsigns held now by people who previously held W3MDC.
No current licensee on record previously held this callsign.