Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4C callsign genealogy
Currently held by O KAIN JR, GRADY 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 KR4C's current licensee, walking backwards.
- Stubbs, Jacob WTNgranted 2014-03-11cancelled 2018-02-06
Successor callsigns
Callsigns held now by people who previously held KR4C.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR4C, oldest first.
- O KAIN JR, GRADY L TN1994-07-15 → cancelled 2004-01-29
- Slee, Donald V GA2006-06-06 → cancelled 2016-01-20
- Stubbs, Jacob W TN2018-02-06 active