Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB0ROC callsign genealogy
Currently held by Martinez, Carlos
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 KB0ROC's current licensee, walking backwards.
- Martinez, CarlosMNgranted 2021-07-24cancelled 2021-08-13
Successor callsigns
Callsigns held now by people who previously held KB0ROC.
- Martinez, CarlosMNgranted 2021-07-24cancelled 2021-08-13
All historical holders
Every license row we've seen with the callsign KB0ROC, oldest first.
- Martinez, Carlos MN2015-01-27 → cancelled 2021-07-24
- Martinez, Carlos MN2021-08-13 active