Strange- I have a EM 300 receiver that appears to be stuck in a diagnostic mode. Too strange to be a failure. Unit works fine BUT instead of the display showing the RF level and the AF level, The two bars are displaying the RF strength, one for antenna I and the other for antenna II. Kind of handy, but I can't for the life of me figure out how to get it back to the standard mode! As you know, the G1 was two generations ago, and it appears all the manuals on line are gone. I suspect it's a second page feature where you have to hold down buttons in a certain pattern as there is definitely no menu option for it. Anybody know the trick on this one?