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Re: [Discuss-gnuradio] USRP spike
From: |
Brian Padalino |
Subject: |
Re: [Discuss-gnuradio] USRP spike |
Date: |
Mon, 16 Aug 2010 14:16:57 -0400 |
Hi Naveen,
On Mon, Aug 16, 2010 at 2:05 PM, naveen nischal
<address@hidden> wrote:
>
> Brain,
> Thanks for the reply. We have tried terminating the antenna input, the spike
> still shows up. We also tried tuning a bit away from the signal of interest
> and mixing the signal of interest to baseband but it doesn't seem to help,
> the spike just follows the signal all over.
I expected the DC offset to still show up after terminating the
antenna input, but I don't understand how the spike always follows the
signal unless something is actually there.
>From your example, you have 435.300MHz as your center frequency which
"appears" to have a large signal present.
If you tune to 437.300MHz, do you see a strong signal at 435.300MHz
still - or does it "follow" your center tuning to 437.300MHz and
435.300MHz is "in the noise floor"?
> Thanks,
> Naveen
Brian