Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9CP callsign genealogy
Currently held by MILLER, JOHN R
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 W9CP's current licensee, walking backwards.
- SERAFINI, DANIEL JILgranted 1993-10-05cancelled 2000-07-04
Successor callsigns
Callsigns held now by people who previously held W9CP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9CP, oldest first.
- MILLER, JOHN R IN1988-06-07 → cancelled 2000-06-09
- SERAFINI, DANIEL J IL2020-04-15 active