Hello, I would like to purchase an Elecraft KAT-100 Antenna Tuner. This is the tuner that works with the 100 Watt upgrade for the Elecraft K2 or K3. You may contact me via my email which is available via my callsign (KN6UDK) on qrz.com. Or reply to the mailing list and I will contact you by your preferred method. Thank You and 73, Bill KN6UDK