Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA5AA callsign genealogy
Currently held by JAMES, BOB 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 NA5AA's current licensee, walking backwards.
- DIEFENBACH, LESTER RTXgranted 2005-03-28cancelled 2011-10-14
Successor callsigns
Callsigns held now by people who previously held NA5AA.
- JAMES, BOB JNMgranted 2008-05-23cancelled 2008-06-14
All historical holders
Every license row we've seen with the callsign NA5AA, oldest first.
- JAMES, BOB J NM2003-12-05 → cancelled 2008-05-23
- DIEFENBACH, LESTER R TX2021-07-17 active