Confidence: Medium · Source: FCC ULS · As of 2026-09-15
K5MBS callsign genealogy
Currently held by Silcox, Matthew 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 K5MBS's current licensee, walking backwards.
- Silcox, Matthew BTXgranted 2004-05-26cancelled 2004-06-16
Successor callsigns
Callsigns held now by people who previously held K5MBS.
No current licensee on record previously held this callsign.