Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AD5ZJ callsign genealogy
Currently held by Crabtree, Christopher 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 AD5ZJ's current licensee, walking backwards.
- Crabtree, Christopher MTXgranted 1999-02-04cancelled 2007-02-21
Successor callsigns
Callsigns held now by people who previously held AD5ZJ.
- Crabtree, Christopher MTXgranted 2017-08-09