Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1GDA callsign genealogy
Currently held by Allen, Geoffrey D
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 N1GDA's current licensee, walking backwards.
- Allen, Geoffrey DMAgranted 2008-03-13cancelled 2010-02-09
Successor callsigns
Callsigns held now by people who previously held N1GDA.
- TRUMBULL, JOHNATHAN GMAgranted 1990-01-23cancelled 2002-03-07