Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TAO callsign genealogy
Currently held by KIRBY, JOHN P
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 K4TAO's current licensee, walking backwards.
- KIRBY, JOHN PVAgranted 2007-05-30cancelled 2012-07-31
Successor callsigns
Callsigns held now by people who previously held K4TAO.
No current licensee on record previously held this callsign.