Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1WH callsign genealogy
Currently held by Day, William L
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 K1WH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K1WH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1WH, oldest first.
- Kreho, Ludwig CT2010-06-23 → cancelled 2022-07-01
- Day, William L NH2022-07-19 active