Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4SRB callsign genealogy
Currently held by Swenson, Brian 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 N4SRB's current licensee, walking backwards.
- Swenson, Brian RFLgranted 2019-09-05cancelled 2019-10-12
Successor callsigns
Callsigns held now by people who previously held N4SRB.
- HARRIGAN, WILLIAM FFLgranted 2025-09-20
All historical holders
Every license row we've seen with the callsign N4SRB, oldest first.
- ELMER, CHARLES H VA1988-04-26 → cancelled 2000-04-27
- HARRIGAN, WILLIAM F FL2013-11-22 → cancelled 2015-10-16
- Swenson, Brian R FL2019-10-12 active