gm, I have the following accessories for sale for the Argonaut 509. All three units are very clean and include the paperwork: Model 208 - CW/Notch Filter Model 206 - Calibrator Model 210 - Power Supply (includes power cable) The price for all three units, including shipping to the lower 48 is $155 73, Jay/KM6VX Near Gettysburg, Pa.