Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6FSP callsign genealogy
Currently held by Dettmar, Joseph 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 K6FSP's current licensee, walking backwards.
- Dettmar, Joseph CCAgranted 2002-03-04cancelled 2004-12-10
Successor callsigns
Callsigns held now by people who previously held K6FSP.
No current licensee on record previously held this callsign.