Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9MLU callsign genealogy
Currently held by RUCK, JOHN C
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 K9MLU's current licensee, walking backwards.
- RUCK, JOHN CWIgranted 2005-10-25cancelled 2008-04-29
Successor callsigns
Callsigns held now by people who previously held K9MLU.
No current licensee on record previously held this callsign.