Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5AZZ callsign genealogy
Currently held by HEIMBOLD, KEITH W
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 K5AZZ's current licensee, walking backwards.
- Scott, Kevin MTXgranted 2019-09-18cancelled 2019-10-27
Successor callsigns
Callsigns held now by people who previously held K5AZZ.
- HEIMBOLD, KEITH WTXgranted 2017-06-09
All historical holders
Every license row we've seen with the callsign K5AZZ, oldest first.
- HEIMBOLD, KEITH W TX2016-04-15 → cancelled 2017-06-09
- Scott, Kevin M TX2019-10-27 active