I’m using the freq message output of the QT GUI Frequency Sink to drive
freq message input of the Frequency Translating FIR Filter. Since I
set the the Center Frequency of the QT Frequency Sink to 7E6 Hz, that
I need to subtract that value before I send it to the channelizer so it
falls between -Fs/2 and +Fs/2.
I tried converting the message to float via PDU to Tagged Stream but
does not work:
thread[thread-per-block: <block pdu_to_tagged_stream (8)>]:
wrong_type : 7.12348e+06
Is there a proper way to do this, i.e. convert to float, add the offset,
convert back to message?
Or is there a way to do this within the Xlating FIR Filter center
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