Michael, I would suggest that you contact Elecraft support and if they deem that you need to contact Bob Friess directly, they will give you the means to do that. 73, Don W3FPR On 12/16/2016 8:15 PM, Michael via Elecraft wrote: > Can anyone send me his email address to n2zdb at aol.com? > > I have some questions on K144XV receiver distortion. >