Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7YSO callsign genealogy
Currently held by Hendrickson, Carl J
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 K7YSO's current licensee, walking backwards.
- Hendrickson, Carl JWAgranted 2016-03-21cancelled 2016-04-08
Successor callsigns
Callsigns held now by people who previously held K7YSO.
No current licensee on record previously held this callsign.