Being a user of older radios of many kinds, preferring them over more modern rigs, this manual was invaluable in the programming of my two. I now know for certain what the assorted buttons functions are, and am very grateful to have found this excellent site. Many thanks for your assistance, Tony.
5 star quality on these downloadable manuals. Easy to read and all the information is there. A must when doing a custom install or needing to service your precious old school electronics.
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SET-UP MENU 2/2 PIXEL SHIFT : OFF POWER SAVE : OFF COLOR-REVERSE : OFF REFRESH : OFF reset all reset HOUR METER x100h : 123 MODEL NAME : GM-420F