Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1WPT callsign genealogy
Currently held by Schiffer, William M
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 K1WPT's current licensee, walking backwards.
- Schiffer, WilliamCTgranted 2020-04-24cancelled 2020-05-12
Successor callsigns
Callsigns held now by people who previously held K1WPT.
No current licensee on record previously held this callsign.