Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA1ACD callsign genealogy
Currently held by KOSOW, ALAN 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 WA1ACD's current licensee, walking backwards.
- KOSOW, ALAN Lcancelled 1999-07-15
Successor callsigns
Callsigns held now by people who previously held WA1ACD.
- KOSOW, ALAN LMAgranted 2020-06-19