KJ4OP
Individual Licensee
Active
KJ4OP is
an active
FCC Amateur Radio license
(Extra class) issued to JONATHAN T. KATZ
in EARLYSVILLE, VA
. Granted December 10, 2025
; expires February 28, 2036.
License Details
Licensee Name
JONATHAN T. KATZ
Entity Type
Individual
Operator Class
Grant Date
December 10, 2025
Expiration Date
February 28, 2036
Radio Service
Amateur Radio
(HA)
FCC Registration Number (FRN)
0003276383
Location & Details
City / State / ZIP
EARLYSVILLE, VA
22936
Browse State
Browse City
Previous Class
Advanced
Call Sign Group
Group B
(1×3 format, Extra/Advanced)
Region Code
4
(FCC geographic call sign district)