Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4BLU callsign genealogy
Currently held by Ehrich, Andrew T
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 KN4BLU's current licensee, walking backwards.
- Ehrich, Andrew TFLgranted 2017-03-02cancelled 2017-03-03
Successor callsigns
Callsigns held now by people who previously held KN4BLU.
No current licensee on record previously held this callsign.