Hi all.
I just want to quickly wrap-up this thread and give some feedback on how I fixed my rx problem. With a lot of help from Ashhar Farhan, Steve Beckman, Evan Hand, Petr Ourednik and Raj we could trace down the problem to L27. Its a inductor choke that was broken. As a result the signal from the antenna did not reach the receiver. After I replaced L27 everything works just fine and I can now enjoy my sBitx V2. :-)
A special thanks to Petr Ourednik who very kindly send me a replacement inductor and some sBitx goodies.
73
Stefan Beck