Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD8ALT callsign genealogy
Currently held by Rudolph, Mark
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 KD8ALT's current licensee, walking backwards.
- Rudolph, MarkOHgranted 2025-06-14cancelled 2025-07-15
Successor callsigns
Callsigns held now by people who previously held KD8ALT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD8ALT, oldest first.
- Nicholas, Bertha L MI2004-10-22 → cancelled 2016-10-25
- Rudolph, Mark OH2025-07-15 active