Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4MG callsign genealogy
Currently held by CRICHTON, HENRY M
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 KB4MG's current licensee, walking backwards.
- Buehring, Martin GGAgranted 2013-05-17cancelled 2014-08-05
Successor callsigns
Callsigns held now by people who previously held KB4MG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4MG, oldest first.
- CRICHTON, HENRY M FL1988-03-22 → cancelled 2000-03-23
- Buehring, Martin G GA2024-06-05 active