RFX900 Transmit Power

GNU Radio
1

Hello again,

I have another question regarding the RFX900 daughterboard.

I am trying to get a sense of the power transmitted by the RFX900 board
in order to avoid breaching European communication regulations.

Ideally a figure for the equivalent isotropically radiated power (EIRP)
would be great.

Will the power output be different with and without the SAW filter?

Cheers,

Tomas O’Maille

PS. Thanks for taking the time to look at my increasing number of posts.

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2

TomasOMaille wrote:

Hello again,

I have another question regarding the RFX900 daughterboard.

Typically about 250 mW if you send a full-strength signal. If you back
off to about 100mW you will get better linearity.

I am trying to get a sense of the power transmitted by the RFX900 board
in order to avoid breaching European communication regulations.

Ideally a figure for the equivalent isotropically radiated power (EIRP)
would be great.

That depends on your antenna and your settings for signal level. If you
want to transmit a weaker signal, send a smaller signal to the USRP.

Will the power output be different with and without the SAW filter?

Yes. You will gain about 1-2 dB by bypassing the filter.

Matt

3

Matt,

Thanks again.

Tomas

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