Re: [Discuss-gnuradio] trouble with gr_multiply_const_ff

On 12/01/2013 09:24 PM, atools_cook wrote:
> Tom,
>
> Value of the signal after the multiply_const block is amplitude,
>
> We set the amplitude as much as 5000 to increase the transmit power of
> signal is an advice from the developer of gen2_reader project Michael
> Buettner, so it would be ok.
>
> You said that the UHD transmitter takes signal samples from 0 to 1 and the
> value of signal should <1, so how can I change the transmit power of signal.
>
> Lee
>
>
>
>
> --
> View this message in context: http://gnuradio.4.n7.nabble.com/trouble-with-gr-multiply-const-ff-tp45018p45037.html
> Sent from the GnuRadio mailing list archive at Nabble.com.
>
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The code you're using probably is *Very* old from a time when it was
conventional to use the hardware ADC/DAC range as the scaling within the
flow-graph.

I'd suggest backing things off so that your signal is peaking at no more
than +/-0.8 or so, and then adjust the RF gain as appropriate.



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