Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF5ZAZ callsign genealogy
Currently held by Brack, Martin 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 KF5ZAZ's current licensee, walking backwards.
- Brack, Martin RTXgranted 2013-10-30cancelled 2013-11-12
Successor callsigns
Callsigns held now by people who previously held KF5ZAZ.
- Brack, Martin RTXgranted 2023-09-07