Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MBK callsign genealogy
Currently held by KREYLING, MIKE B
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 W4MBK's current licensee, walking backwards.
- KREYLING, MIKE BKYgranted 1996-11-21cancelled 2001-10-30
Successor callsigns
Callsigns held now by people who previously held W4MBK.
No current licensee on record previously held this callsign.