I have For Sale a very nice working KAT100 external auto tuner for the K2. This tuner will tune just about anything. It integrates very nice with the K2. It comes with the correct cables for K2 integration with your computer for Cat control, power cord, and the manual.$200. shipped conusa.Paypal preferred. 73! Tomy KF7GC AZ STM NM AZ Section Net ORS, www.atenaz.net