Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9RIH callsign genealogy
Currently held by TESSMER, MICHAEL D
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 KB9RIH's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KB9RIH.
- WW9DXactiveWESTERN WISCONSIN DX ASSOCIATIONWIgranted 2017-10-13