Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3SPF callsign genealogy
Currently held by JONES, MICHAEL 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 W3SPF's current licensee, walking backwards.
- Feinman, Stephen PMDgranted 2022-11-24cancelled 2023-03-07
Successor callsigns
Callsigns held now by people who previously held W3SPF.
- JONES, MICHAEL ETXgranted 2016-07-06
All historical holders
Every license row we've seen with the callsign W3SPF, oldest first.
- JONES, MICHAEL E TX2016-04-12 → cancelled 2016-07-06
- Feinman, Stephen P MD2023-03-07 active