Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD5SP callsign genealogy
Currently held by ORTNER, BRIAN 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 AD5SP's current licensee, walking backwards.
- ORTNER, BRIAN RTXgranted 1996-12-30cancelled 2004-10-12
Successor callsigns
Callsigns held now by people who previously held AD5SP.
- ORTNER, BRIAN RTXgranted 2004-10-30cancelled 2006-04-18