Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4YHD callsign genealogy
Currently held by Waters IV, Karl M
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 KI4YHD'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 KI4YHD.
- Waters IV, Karl MNCgranted 2017-11-07