Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5DI callsign genealogy
Currently held by HAMMOND, MICHAEL K
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 KC5DI's current licensee, walking backwards.
- ISTRE, DALLAS LLAgranted 2014-04-08cancelled 2016-01-23
Successor callsigns
Callsigns held now by people who previously held KC5DI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC5DI, oldest first.
- HAMMOND, MICHAEL K TX1996-09-11 → cancelled 2007-11-29
- ISTRE, DALLAS L LA2025-12-09 active