Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1OD callsign genealogy
Currently held by KACZYNSKI, MICHAEL B
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 W1OD's current licensee, walking backwards.
- COHN, STEPHEN CMAgranted 2002-09-06cancelled 2012-07-27
Successor callsigns
Callsigns held now by people who previously held W1OD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1OD, oldest first.
- KACZYNSKI, MICHAEL B CT2007-03-06 → cancelled 2010-07-06
- COHN, STEPHEN C MA2022-05-19 active