1)  Line 1 (according to my numbering scheme) on the ribbon cable seems to
    correspond to the RANGE input of the clock/counter IC. It floats high
    normally (apparently it has an internal pull-up resistor). Ground it for
    display in MHz rather than KHz

2)  Line 2 similarly floats high and appears to be connected to the
    AM/FM-SEL input. Ground it to select FM mode.

3) While the radio works well at higher supply voltages
    the LCD works best at between 2.5 - 4.5V (the contrast is better).
    I currently have it running off 2 NiMH cells i.e around 2.4-2.6V