Two daughter board cause frequency shift

Hi all,

I have problem using two daughter boards one as transceiver and the
for sensing.

The process is ok, decimation rate is 256, freq: 2.4 - 2.5 GHz
but there is a shift in the sensed frequencies.
I read ‘FSK with RFX2400’ it explained about it, however when i use only
board for sensing the shift is very small but if i use two daughter
the shift is very large…

any body has explanation?


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