Confidence: Medium · Source: FCC ULS · As of 2026-09-09
N0SQL callsign genealogy
Currently held by GAMBLE, MARY P
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 N0SQL's current licensee, walking backwards.
- Prenger, Matthew WMOgranted 2014-12-23cancelled 2017-01-18
Successor callsigns
Callsigns held now by people who previously held N0SQL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0SQL, oldest first.
- GAMBLE, MARY P MO2002-02-19 → cancelled 2014-05-20
- Prenger, Matthew W MO2017-01-18 active