Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1UD callsign genealogy
Currently held by Chatfield, Chester A
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 K1UD's current licensee, walking backwards.
- Chatfield, Chester AAZgranted 2019-07-15cancelled 2024-06-11
Successor callsigns
Callsigns held now by people who previously held K1UD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1UD, oldest first.
- HAYWARD, ROBERT O ME2012-03-30 → cancelled 2024-05-22
- Chatfield, Chester A AZ2024-06-11 active