Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4JDK callsign genealogy
Currently held by PARROTT, BENJAMIN A
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 KJ4JDK's current licensee, walking backwards.
- Konz, Jeffrey DMOgranted 2016-07-19cancelled 2017-09-15
Successor callsigns
Callsigns held now by people who previously held KJ4JDK.
- PARROTT, BENJAMIN ATNgranted 2009-03-14cancelled 2014-02-08
All historical holders
Every license row we've seen with the callsign KJ4JDK, oldest first.
- PARROTT, BENJAMIN A TN2009-01-28 → cancelled 2009-03-14
- Konz, Jeffrey D WI2017-09-15 active