Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4CS callsign genealogy
Currently held by SHELFER, CARL E
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 WA4CS's current licensee, walking backwards.
- SHELFER, CARL EGAgranted 2008-03-01cancelled 2010-09-14
Successor callsigns
Callsigns held now by people who previously held WA4CS.
No current licensee on record previously held this callsign.