Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4KOA callsign genealogy
Currently held by McConaughy, Daniel T
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 K4KOA's current licensee, walking backwards.
- OLENDORF JR, WILLIAM CSCgranted 1998-01-09cancelled 2005-01-07
Successor callsigns
Callsigns held now by people who previously held K4KOA.
- McConaughy, Daniel TTXgranted 2000-07-08cancelled 2012-07-10
All historical holders
Every license row we've seen with the callsign K4KOA, oldest first.
- McConaughy, Daniel T TN1998-01-08 → cancelled 2000-07-08
- OLENDORF JR, WILLIAM C SC2024-10-12 active