Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP3ZP callsign genealogy
Currently held by McMahan, John J
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 WP3ZP's current licensee, walking backwards.
- Mc Mahan, John JPRgranted 2003-01-10cancelled 2004-02-28
Successor callsigns
Callsigns held now by people who previously held WP3ZP.
No current licensee on record previously held this callsign.