Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD5SM callsign genealogy
Currently held by May, Robert E
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 AD5SM's current licensee, walking backwards.
- May, Robert ETXgranted 2004-05-04cancelled 2004-10-06
Successor callsigns
Callsigns held now by people who previously held AD5SM.
- May, Robert ETXgranted 2015-11-25cancelled 2018-11-24