Hi Christophe, The VCO shield kit may be found here: http://www.elecraft.com/order_form_parts.htm#K2%20Parts Look at the first line labeled K2VCOSHLDKT. 73, Mike, K8CN -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Modulation-on-CW-signal-tp7564439p7564518.html Sent from the Elecraft mailing list archive at Nabble.com.