Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4YKI callsign genealogy
Currently held by MISENHEIMER, WILLIAM 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 W4YKI's current licensee, walking backwards.
- Misenheimer, William CMSgranted 2006-08-03cancelled 2009-02-18
Successor callsigns
Callsigns held now by people who previously held W4YKI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4YKI, oldest first.
- Misenheimer, Robert G NC2005-11-21 → cancelled 2008-11-15
- MISENHEIMER, WILLIAM C MS2018-11-28 active