Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the current value of the Kenwood JR-310. Just bought or sold this model? Let us know what you traded it for and help other ham operators!
When I started in ham-radio, some 25 years ago, I bought this nice receiver. It's all with tubes and I changed the mixer tube to a better one. (6CB6 to 6JK6) On 40 meters, it was better listening. For schematics look at: http://www.radioamateur.eu/kenwood.html Later I sold the JR310 and bought a TS520 transceiver line. P.S. All those 6CB6 mixer tubes are also used in other Kenwood equipment. Replace them !!!