Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AH6SJ callsign genealogy
Currently held by Krumlinde, William 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 AH6SJ's current licensee, walking backwards.
- Krumlinde, William CHIgranted 1998-03-02cancelled 2006-04-04
Successor callsigns
Callsigns held now by people who previously held AH6SJ.
No current licensee on record previously held this callsign.