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==modification====technical=====modification======hidden menus===There are special menus on the FT-847. One, documented in the Operating Manual, is accessed by changing Menu #42 EXTEND to ON. Alignment menu - not mentioned in the manual. To access this menu, you need the standard mike with the UP, DOWN, and FAST buttons. Hold down these three buttons simultaneously and turn on the radio using the power switch. This will place you into the alignment menu. Doing this does not cause a reset of your radio.