Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4MC callsign genealogy
Currently held by COHEN, MICHAEL 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 AD4MC's current licensee, walking backwards.
- COHEN, MICHAEL RGAgranted 2003-01-28cancelled 2009-03-17
- KD4LEVno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AD4MC.
- NICHIPOR, STEVEN FFLgranted 2006-05-25cancelled 2016-08-02