Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW1CAT callsign genealogy
Currently held by Rosenberg, Michael I
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 WW1CAT's current licensee, walking backwards.
- Rosenberg, Michael IFLgranted 2019-05-22cancelled 2019-07-20
Successor callsigns
Callsigns held now by people who previously held WW1CAT.
No current licensee on record previously held this callsign.