Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4BRR callsign genealogy
Currently held by Haltner, Michael A
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 K4BRR's current licensee, walking backwards.
- Haltner, Michael ACAgranted 2007-05-07cancelled 2010-10-09
Successor callsigns
Callsigns held now by people who previously held K4BRR.
No current licensee on record previously held this callsign.