Failure to receive the correct Preamble

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bravehamid

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Apr 13, 2020
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HI
I'm using a USRP to receive a signal on the 900 MHz frequency band, but the signal received after demodulation has no preamble. Does anyone know what the cause is?
transmitter information:
Baud rate=10K
modulation = BFSK
deviation = 100K
channel spacing = 350K
 

boatbod

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Mar 3, 2007
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Talbot Co, MD
Preamble is going to depend on the protocol. What are you monitoring?
What application are you using to attempt the decode?
 

bravehamid

Newbie
Joined
Apr 13, 2020
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my module is XTP9B and I'm trying that receive data with USRP B210(with gnuradio).Sender of the module is ADF7023.In the datasheet ADF7023: Preamble=0x55
 
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