Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NG0A callsign genealogy
Currently held by KRAMER, JAMES J
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 NG0A's current licensee, walking backwards.
- Castro, DonovanCAgranted 2026-02-28cancelled 2026-04-04
Successor callsigns
Callsigns held now by people who previously held NG0A.
- Castro, DonovanCAgranted 2026-05-09
All historical holders
Every license row we've seen with the callsign NG0A, oldest first.
- KRAMER, JAMES J MN2013-12-27 → cancelled 2026-03-17
- Castro, Donovan CA2026-04-04 → cancelled 2026-05-09