Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA7I callsign genealogy
Currently held by CHAFFER, JOHN R
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 NA7I's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NA7I.
- CHAFFER, JOHN RMTgranted 2009-04-07cancelled 2009-05-15
All historical holders
Every license row we've seen with the callsign NA7I, oldest first.
- CHAFFER, JOHN R MT2006-02-02 → cancelled 2009-04-07
- CHAFFER, JOHN R MT2019-04-04 active