Tks Dave- I guess it's so obvious I'm not surprised that it's been done already. Must be a case of 'great minds--' and all that! 73 Dave, ZL3FJ **************** Dave, the CRA has published a modification that is rather simple and straightforward. It was in its official organ, the Collins Journal. Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com