Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3XXX callsign genealogy
Currently held by CACTUS CONTEST CLUB
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 K3XXX's current licensee, walking backwards.
- Hosfield III, JamesPAgranted 2013-11-05cancelled 2013-11-30
Successor callsigns
Callsigns held now by people who previously held K3XXX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3XXX, oldest first.
- CACTUS CONTEST CLUB AZ2001-06-16 → cancelled 2013-06-18
- Hosfield III, James PA2023-11-28 active