Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W2YMX callsign genealogy
Currently held by HOROWITZ, MARK S
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 W2YMX's current licensee, walking backwards.
- HOROWITZ, MARK SFLgranted 2001-07-13cancelled 2002-12-03
Successor callsigns
Callsigns held now by people who previously held W2YMX.
- HOROWITZ, MARK SFLgranted 2022-12-07