Re: [Discuss-gnuradio] Power output RFX2400 and OFDM example

[Marcus Müller]

Ideally, you'd transmitting one fourth of the power as you would if you 
scale the samples going to your USRP with 1 -- remember, scalar factors 
affect the signal's amplitude, and power is proportional to amplitude²!

Best regards,
Marcus


On 27.07.2015 17:56, Jose Perez wrote:
> Hi all,
>
> I am trying to obtain or know how much power output my hardware device is
> transmitting. For this, I am running the example "tx_ofdm.grc" with a USRP1
> and RFX2400 daughterboard. The RFX2400 provides a typical power output of 50
> mW => ~ 17dBm.
> The block "Multiply const" can increase or decrease my transmitted signal
> and I am also using a Spectrum Analyzer to measure the received signal
> according the distance.
> Actually, I need understand how the "Multiply const" block relates with the
> power output ... and what is the exact power that my hardware is
> transmitting.
> If I put 0,5 in "Multiply const" block this means the I am transmitting half
> of my all power output?
>
>
> Thank you in advance.
>
> Cheers,
> José
>
>
>
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