Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZVD callsign genealogy
Currently held by Ullman, Samuel C
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 K4ZVD's current licensee, walking backwards.
- Ullman, Samuel CFLgranted 2012-10-05cancelled 2012-10-27
Successor callsigns
Callsigns held now by people who previously held K4ZVD.
No current licensee on record previously held this callsign.