Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB7PHM callsign genealogy
Currently held by MC DANIEL, JOSEPH D
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 WB7PHM's current licensee, walking backwards.
- Rider, James APAgranted 2024-05-17cancelled 2024-06-08
Successor callsigns
Callsigns held now by people who previously held WB7PHM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB7PHM, oldest first.
- MC DANIEL, JOSEPH D AZ2004-04-27 → cancelled 2016-07-15
- Rider, James A PA2024-06-08 active