Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0LCK callsign genealogy
Currently held by MEDLOCK, JAMES L
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 N0LCK's current licensee, walking backwards.
- Dean, Frank ACOgranted 2017-12-07cancelled 2017-12-27
Successor callsigns
Callsigns held now by people who previously held N0LCK.
- DEAN, FRANK ACOgranted 2018-10-10cancelled 2018-11-20
All historical holders
Every license row we've seen with the callsign N0LCK, oldest first.
- MEDLOCK, JAMES L MO2002-03-21 → cancelled 2014-03-22
- DEAN, FRANK A CO2017-12-27 → cancelled 2018-10-10