Re: [Discuss-gnuradio] Noise floor and Rx Gain

On 01/23/2010 01:28 PM, Yong J. Chang wrote:
>
> Thanks for your great answer Matt. I have another quick question.
> We know that the controllable range of rx-gain is 0 to 90dB in RFX-2400
> d'board.
> But I only can find a programable gain amplifier in ADC chip whose range is
> 0 to 20dB.
> Where is the received signal actually amplified according to the 'rx_gain'
> value?

Yes. There is a 70dB analog programmable gain amplifier in the
Quadrature Demodulator chip, the AD8347.

Matt

_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio