Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1SEF callsign genealogy
Currently held by SKRZYPCZAK, ALBERT R
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 W1SEF's current licensee, walking backwards.
- Skrzypczak, Peter EMAgranted 2007-05-21cancelled 2007-08-25
Successor callsigns
Callsigns held now by people who previously held W1SEF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1SEF, oldest first.
- SKRZYPCZAK, ALBERT R MA2004-02-24 → cancelled 2006-12-04
- Skrzypczak, Peter E MA2017-08-03 active