Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SAG callsign genealogy
Currently held by GLOWACKI, STEPHEN A
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 W4SAG's current licensee, walking backwards.
- Lancaster, David MFLgranted 2018-02-09cancelled 2018-03-03
Successor callsigns
Callsigns held now by people who previously held W4SAG.
- GLOWACKI, STEPHEN AMDgranted 2021-07-28
All historical holders
Every license row we've seen with the callsign W4SAG, oldest first.
- GLOWACKI, STEPHEN A MD2006-01-10 → cancelled 2011-08-16
- Lancaster, David M FL2018-03-03 active