Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3UCU callsign genealogy
Currently held by MAJEWSKI, FREDERICK E
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 K3UCU's current licensee, walking backwards.
- Majewski, FrederickPAgranted 2022-10-12cancelled 2022-11-29
Successor callsigns
Callsigns held now by people who previously held K3UCU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3UCU, oldest first.
- MAJEWSKI, FREDERICK E PA1995-09-27 → cancelled 2007-09-28
- Majewski, Frederick PA2022-11-29 active