Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3CUU callsign genealogy
Currently held by Roemer, William 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 K3CUU's current licensee, walking backwards.
- Heidenblad, Donal SMDgranted 2006-02-07cancelled 2011-04-16
Successor callsigns
Callsigns held now by people who previously held K3CUU.
- Roemer, William SNYgranted 2018-03-03
All historical holders
Every license row we've seen with the callsign K3CUU, oldest first.
- Roemer, William S NY2004-03-02 → cancelled 2008-03-04
- HEIDENBLAD, DONAL S MD2021-01-21 active