Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9ZSP callsign genealogy
Currently held by CRABB, LARRY 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 W9ZSP's current licensee, walking backwards.
- Crabb, Larry DINgranted 2006-09-11cancelled 2006-10-28
Successor callsigns
Callsigns held now by people who previously held W9ZSP.
No current licensee on record previously held this callsign.