Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0CAT callsign genealogy
Currently held by BLUMENSTEIN, RICHARD C
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 K0CAT's current licensee, walking backwards.
- Blumenstein, Richard CFLgranted 2013-02-22cancelled 2013-03-15
Successor callsigns
Callsigns held now by people who previously held K0CAT.
- KX0AcancelledLAKELAND VHF RADIO SOCIETYMNgranted 2019-12-10cancelled 2020-08-14
All historical holders
Every license row we've seen with the callsign K0CAT, oldest first.
- LAKELAND VHF RADIO SOCIETY MN2009-03-13 → cancelled 2010-02-09
- BLUMENSTEIN, RICHARD C NC2023-01-04 active