Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0MBB callsign genealogy
Currently held by SOBEL, GERALD A
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 K0MBB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K0MBB.
- SOBEL, GERALD AMOgranted 2009-07-17cancelled 2009-10-07
All historical holders
Every license row we've seen with the callsign K0MBB, oldest first.
- SOBEL, GERALD A MO2008-05-22 → cancelled 2009-07-17
- SOBEL, GERALD A NV2019-07-27 active