Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4YPO callsign genealogy
Currently held by QCWA Palm Beach Chapter #111
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 K4YPO's current licensee, walking backwards.
- KG4NWHcancelledQCWA PALM BEACH CHAPTER #111FLgranted 2001-06-07cancelled 2003-06-06
Successor callsigns
Callsigns held now by people who previously held K4YPO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4YPO, oldest first.
- HAYNES, FORREST K FL1997-09-22 → cancelled 2002-10-22
- QCWA Palm Beach Chapter #111 FL2023-12-01 active