isn't the software—it's the hardware. The internal programming pads on the side of the radio can develop oxidation over decades. RadioInfoBoard suggest using a pencil eraser
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The SP50 uses , which is DOS-based. Version: The standard software part number is HVN9012 . isn't the software—it's the hardware
, you must use a setup that mimics the original era of the radio. consider these alternatives: The SP50 uses