What is your RX gain setting?
Does the unwanted carrier remain when you stop transmitting?
What happens if you use offset tuning of about 1/2 your bandwidth?
Also, yes, it's better if your master clock rate is at least double your
sample rate, but of course, that's not always possible.
On 2017-07-10 13:04, Cho, Daniel J (332C) via USRP-users wrote:
> Hello -
>
> I am using two USRP E310s with on transmitting and one receiving. I had one
> USRP transmit a CW tone at 4.2 GHz and had the other USRP receive at 4.205
> GHz. For some reason, I see two peaks, one at the expected frequency (5 MHz
> offset from center) and one at center frequency.
>
> Is there a reason for the peak at center frequency?
>
> Also, when trying to capture at 20 MHz bandwidth, I am setting the master
> clock rate at 20e6 and the rx/tx rate at 20e6. Is that correct? Or do I
> have to double the master clock rate?
>
> Thanks,
>
> Daniel Cho
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