Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JER callsign genealogy
Currently held by Robinson, Jerry 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 K4JER's current licensee, walking backwards.
- Cook, JeremyGAgranted 2024-12-21cancelled 2026-03-27
Successor callsigns
Callsigns held now by people who previously held K4JER.
- Robinson, Jerry ETNgranted 2010-03-16cancelled 2014-01-28
All historical holders
Every license row we've seen with the callsign K4JER, oldest first.
- Robinson, Jerry E TN2009-09-03 → cancelled 2010-03-16
- Robinson, Jerry E TN2014-01-28 → cancelled 2026-03-07
- Cook, Jeremy GA2026-03-27 active