Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF7NJD callsign genealogy
Currently held by Maxwell, Preston 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 KF7NJD's current licensee, walking backwards.
- Maxwell, Preston JAZgranted 2009-09-28cancelled 2009-10-20
Successor callsigns
Callsigns held now by people who previously held KF7NJD.
- Maxwell, Preston JAZgranted 2023-01-28