Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4SMI callsign genealogy
Currently held by HUMPHRIES, KIRVEN R
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 W4SMI's current licensee, walking backwards.
- Smith, Michael DNCgranted 2008-07-15cancelled 2013-08-13
Successor callsigns
Callsigns held now by people who previously held W4SMI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4SMI, oldest first.
- HUMPHRIES, KIRVEN R SC1987-12-08 → cancelled 1999-12-09
- SMITH, MICHAEL D NC2025-07-01 active