Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5FIV callsign genealogy
Currently held by ESTES III, ROBERT J
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 K5FIV's current licensee, walking backwards.
- ESTES III, ROBERT JTXgranted 1996-05-29cancelled 2000-04-11
Successor callsigns
Callsigns held now by people who previously held K5FIV.
- Estes III, Robert JTXgranted 2021-01-26