Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD1OS callsign genealogy
Currently held by LATTANZE JR, RICHARD F
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 AD1OS's current licensee, walking backwards.
- LATTANZE JR, RICHARD FVAgranted 2015-04-08cancelled 2016-04-09
Successor callsigns
Callsigns held now by people who previously held AD1OS.
- ZYARA JR, MICHAEL APAgranted 2023-08-16
All historical holders
Every license row we've seen with the callsign AD1OS, oldest first.
- ZYARA JR, MICHAEL A PA2008-12-09 → cancelled 2013-11-09
- LATTANZE JR, RICHARD F SC2026-05-19 active