Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JTC callsign genealogy
Currently held by CRESPO JR, JERRY T
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 K4JTC's current licensee, walking backwards.
- CRESPO JR, JERRY TGAgranted 2015-02-17cancelled 2015-03-10
Successor callsigns
Callsigns held now by people who previously held K4JTC.
No current licensee on record previously held this callsign.