Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AK4UM callsign genealogy
Currently held by Blankenblicker, Adam S
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 AK4UM's current licensee, walking backwards.
- Blankenblicker, Adam STNgranted 2012-02-15cancelled 2012-05-10
Successor callsigns
Callsigns held now by people who previously held AK4UM.
No current licensee on record previously held this callsign.