Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9KRN callsign genealogy
Currently held by THOMPSON, BASIL E
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 K9KRN's current licensee, walking backwards.
- Palmer, Karen KMIgranted 2015-04-02cancelled 2016-08-16
Successor callsigns
Callsigns held now by people who previously held K9KRN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9KRN, oldest first.
- THOMPSON, BASIL E IN1997-09-24 → cancelled 2000-07-24
- Palmer, Karen K MI2016-08-16 active