HICUT / LOCUT no function


Hi folks,

I have the problem that I can't use the function LO-Cut and HI-Cut in CW. It is just not working.
If I try to use the knob it shows "FC *0.70" and I can not change it.
 What is the problem? In SSB it works correctly.
I have seen in the CW there is a + sign far right in the display. This is not there in SSB.
What for is this? Is it the problem?
Would be really glad to get some help.

Thanks, Andy

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