I have always wanted one and now I have one. I talk SSB a lot and heard these were great radio's. Now I have one. Been talking on RCI2950 ssb for a while. I took top and bottom off and looked around and took some pics of the 2510. I was wondering if anyone could tell me by looking at the pics what mods have been done. I was hoping the Rogerbird chipswitch was in it but I don't think it is. Looks like it has had new finals. I was also notice that 27835.00 was reading channel 39 is this common with changeover to 11 meters? Made first contact in Washington State said it sound good, but audio was down. I found mike button and pressed it he said it got louder. I am puzzled the audio gain dial is not there and just the button. How do you turn audio up and down? Please take a look at the pics, maybe you can tell me what has been done. Thanks