Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3MMA callsign genealogy
Currently held by Siegrist, Robert
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 W3MMA's current licensee, walking backwards.
- Siegrist, RobertPAgranted 2012-11-07cancelled 2020-07-24
Successor callsigns
Callsigns held now by people who previously held W3MMA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3MMA, oldest first.
- WIHERLE, MATTHEW MD2007-07-16 → cancelled 2019-09-04
- Siegrist, Robert PA2020-07-24 active