Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4TKZ callsign genealogy
Currently held by Foust, David 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 KB4TKZ's current licensee, walking backwards.
- Foust, David MALgranted 2000-01-07cancelled 2009-09-11
Successor callsigns
Callsigns held now by people who previously held KB4TKZ.
- Foust, David MALgranted 2026-06-23
All historical holders
Every license row we've seen with the callsign KB4TKZ, oldest first.
- FOUST, WILBURN C AL1989-04-04 → cancelled 2001-04-05
- Foust, David M AL2009-09-11 → cancelled 2016-08-23