Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3ROB callsign genealogy
Currently held by Sia II, Roberto 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 K3ROB's current licensee, walking backwards.
- Sia II, Roberto FPAgranted 2018-07-05cancelled 2019-03-15
Successor callsigns
Callsigns held now by people who previously held K3ROB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3ROB, oldest first.
- ALLEN, CARROLL T MD2006-09-11 → cancelled 2018-09-12
- Sia II, Roberto F PA2019-03-15 active