Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WC3C callsign genealogy
Currently held by Muma, Robert J
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 WC3C's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WC3C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WC3C, oldest first.
- WILHELM, CHARLES N PA2010-05-04 → cancelled 2013-11-10
- Muma, Robert J PA2015-12-01 active