Hi Urs ,
Just want to THANK YOU again for your support .
The issue was related to my Windows 7 Regional settings for the separator used for decimals .... Replace a " , " by a " . " . The hint was given by the display of the Unicom Frequency in the Settings Tab , which has to be configured rightfully on 122.8 , so 122(dot)8 , and not 122(comma)8 .
Francis