Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MWA callsign genealogy
Currently held by Billker, Jonathan M
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 W4MWA's current licensee, walking backwards.
- Ashworth, Matthew WTNgranted 2022-04-15cancelled 2022-10-14
Successor callsigns
Callsigns held now by people who previously held W4MWA.
- Billker, Jonathan MPAgranted 2018-05-30
All historical holders
Every license row we've seen with the callsign W4MWA, oldest first.
- Billker, Jonathan M VA2013-07-09 → cancelled 2018-05-30
- Ashworth, Matthew W TN2022-10-14 active