Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MAM callsign genealogy
Currently held by SWEENEY, DAVID
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 W3MAM's current licensee, walking backwards.
- SWEENEY, DAVIDMDgranted 2019-07-08cancelled 2019-07-26
Successor callsigns
Callsigns held now by people who previously held W3MAM.
- SWEENEY, DAVIDMDgranted 2024-04-23
All historical holders
Every license row we've seen with the callsign W3MAM, oldest first.
- YURICEK, JOHN PA2000-05-25 → cancelled 2003-03-31
- SWEENEY, DAVID MD2019-07-26 → cancelled 2024-04-23