Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1CAT callsign genealogy
Currently held by SIEBENSCHUH, RENAY M
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 K1CAT's current licensee, walking backwards.
- SIEBENSCHUH, RENAY MMIgranted 2010-03-25cancelled 2010-08-13
Successor callsigns
Callsigns held now by people who previously held K1CAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1CAT, oldest first.
- Bearss, Anna WI1998-02-06 → cancelled 2010-02-09
- SIEBENSCHUH, RENAY M MI2020-07-08 active