I guess because there's no physical volume indicator, the Blaupunkt
designer
chose to have the volume go down to zero when power is shut off. So you
have
to reset volume whenever powering on. After letting off the clock button,
the display returns to the radio call number when it should stay showing
the
time. There are some other lesser control annoyances.

weird. my blau colorado lets you set what you want the volume to be when you
turn it on, and when you mute it.