Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5ZJP callsign genealogy
Currently held by Smith, Jeffrey
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 KB5ZJP's current licensee, walking backwards.
- Smith, JeffreyCOgranted 2018-11-19cancelled 2018-12-11
Successor callsigns
Callsigns held now by people who previously held KB5ZJP.
- Smith, JeffreyCOgranted 2020-02-21
All historical holders
Every license row we've seen with the callsign KB5ZJP, oldest first.
- SMITH, JEFFREY A OK2002-12-23 → cancelled 2015-03-24
- Smith, Jeffrey CO2018-12-11 → cancelled 2020-02-21