The standard antenna connector is a 50 ohm BNC. If the K2 has the built-in ATU, then the standard BNC socket is capped and there are an additional 2 BNC sockets from the ATU, selectable ANT1 and ANT2 from the front panel.
Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used Elecraft K2. Just bought or sold this model? Let us know what you traded it for and help other ham operators!
Based on historic price data, today's estimated value of the Elecraft K2 in Good condition is around:
These estimates are based on the following prices: