Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9PHL callsign genealogy
Currently held by SCHMAHL, PHILLIP N
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 W9PHL's current licensee, walking backwards.
- SCHMAHL, PHILLIP NWIgranted 2022-02-14cancelled 2022-03-08
Successor callsigns
Callsigns held now by people who previously held W9PHL.
- SCHMAHL, PHILLIP NWIgranted 2022-12-02