Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4WYP callsign genealogy
Currently held by THACKER, LYDIA 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 KC4WYP's current licensee, walking backwards.
- THACKER, LYDIA AOHgranted 2014-09-15cancelled 2015-06-05
Successor callsigns
Callsigns held now by people who previously held KC4WYP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4WYP, oldest first.
- SIMPSON, RICHARD D FL2002-04-24 → cancelled 2013-05-29
- THACKER, LYDIA A OH2025-05-23 active