Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1YUP callsign genealogy
Currently held by Haag, Michael H
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 K1YUP's current licensee, walking backwards.
- Haag, Michael HNYgranted 2008-05-20cancelled 2016-04-23
Successor callsigns
Callsigns held now by people who previously held K1YUP.
No current licensee on record previously held this callsign.