Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7PH callsign genealogy
Currently held by Seng, C John 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 AC7PH's current licensee, walking backwards.
- Seng, C John MAZgranted 1997-10-31cancelled 2001-10-24
Successor callsigns
Callsigns held now by people who previously held AC7PH.
No current licensee on record previously held this callsign.