Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4PN callsign genealogy
Currently held by LOEWENTHAL, ROBERT 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 AB4PN's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AB4PN.
- LOEWENTHAL, ROBERT JGAgranted 2012-09-25cancelled 2024-09-26