Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TRX callsign genealogy
Currently held by Russillo, Paul F
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 K4TRX's current licensee, walking backwards.
- Russillo, Paul FFLgranted 2008-01-09cancelled 2008-02-01
Successor callsigns
Callsigns held now by people who previously held K4TRX.
No current licensee on record previously held this callsign.