Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR3K callsign genealogy
Currently held by KELLER, JOSEPH R
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 KR3K's current licensee, walking backwards.
- Mikhalchuk, Andrey SMDgranted 2011-02-22cancelled 2011-03-29
Successor callsigns
Callsigns held now by people who previously held KR3K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR3K, oldest first.
- KELLER, JOSEPH R PA1998-06-23 → cancelled 2010-06-24
- Mikhalchuk, Andrey S VA2021-02-09 active