Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1ZJJ callsign genealogy
Currently held by CHEKOS, JAMES J
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 K1ZJJ's current licensee, walking backwards.
- Chekos, James JMAgranted 2013-01-29cancelled 2013-02-20
Successor callsigns
Callsigns held now by people who previously held K1ZJJ.
- CHEKOS, HARRY JMAgranted 2026-08-12