Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NR4J callsign genealogy
Currently held by Parmley, Mark E
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 NR4J's current licensee, walking backwards.
- Parmley, Mark EALgranted 2005-06-01cancelled 2010-08-17
Successor callsigns
Callsigns held now by people who previously held NR4J.
- Kuykendall, Tighe WTNgranted 2018-05-02
All historical holders
Every license row we've seen with the callsign NR4J, oldest first.
- RHINE, JAMES E FL1996-12-18 → cancelled 2006-06-09
- Kuykendall, Tighe W SC2008-06-28 → cancelled 2008-07-22
- Parmley, Mark E AL2020-08-04 active