Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6SIM callsign genealogy
Currently held by HORWITZ, SIMON P
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 K6SIM's current licensee, walking backwards.
- HORWITZ, SIMON PCAgranted 2000-11-08cancelled 2002-12-06
Successor callsigns
Callsigns held now by people who previously held K6SIM.
No current licensee on record previously held this callsign.