Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4ZP callsign genealogy
Currently held by Glasscock, Jeffrey S
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 AJ4ZP's current licensee, walking backwards.
- Glasscock, Jeffrey SGAgranted 2008-01-18cancelled 2010-06-07
Successor callsigns
Callsigns held now by people who previously held AJ4ZP.
No current licensee on record previously held this callsign.