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pi/4-DQPSK modem IC needed

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Unomano

Unomano

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i'm looking for pi/4-DQPSK modem IC
or how to transmit data in audio band
 

Hello CMX 980 from CML micro is pi/4 dqpsk modem like chip
what is your data rate?
 

Please go through the data sheet , it seems you can use it.
 

i'm looking for pi/4-DQPSK code（vhdl）
please help me !thanks a lot!
 

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