Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4RSS callsign genealogy
Currently held by PORTER, MARK 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 WA4RSS's current licensee, walking backwards.
- Sigmon, Ronald SNCgranted 2007-02-21cancelled 2010-07-30
Successor callsigns
Callsigns held now by people who previously held WA4RSS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4RSS, oldest first.
- Sigmon, Ronald S NC2020-05-15 active
- PORTER, MARK A— → cancelled 1998-08-20