Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0NL callsign genealogy
Currently held by Cramer, Robert L
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 AB0NL's current licensee, walking backwards.
- CRAMER, ROBERT LIAgranted 2000-06-16cancelled 2000-06-21
Successor callsigns
Callsigns held now by people who previously held AB0NL.
- Cramer, Robert LIAgranted 2005-05-10cancelled 2017-05-11