In a message dated 11/24/2006 9:54:34 A.M. Central Standard Time, augie.hansen at comcast.net writes: These noise blankers are scarce and rather expensive. I have no experience with the converted Ten-Tec noise blankers. Lee, You might zip off an email to Ten-Tec asking about their nb's and your Drake application. They are usually very helpful. 73, Don - K4BEV