Sorry for the delay, but the show of interest page for Excalibur and Pennywhistle kits is now up on hamsdr.com. Please go here to sign up: http://www.hamsdr.com/hpsdrlist.aspx?p=7 Pennywhistle is a 1/2W in - 20W out HF/6M PA. Excalibur is a 10MHz frequency reference for HPSDR. Enjoy! 73, Scotty WA2DFI 1245690885.0