Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1OPK callsign genealogy
Currently held by Rosenbloom, Barry
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 K1OPK's current licensee, walking backwards.
- Rosenbloom, BarryMAgranted 2021-02-10cancelled 2021-05-28
Successor callsigns
Callsigns held now by people who previously held K1OPK.
No current licensee on record previously held this callsign.