[Hackrf-dev] High Noise Floor

[Mike Walters]

Did you update the CPLD when updating firmware?

On 5 March 2016 at 05:08, Jay Radcliffe <jay.radcliffe at gmail.com> wrote:

> Hello,
>
> I am working with an older Jawbreaker with current firmware (2015.07.2)
> and am seeing something odd. When I just run a simple source -> FFT in GRC
> the baseline of the noise floor is quite high (around -40db). When I take
> the antenna off it drops down to -90db. Tried several antennas with same
> results. I have tried the FM broadcast band, 440mhz and 915mhz. Typically
> when I see examples of the FFT in a demonstration or presentation the noise
> floor is in the -80/-90 range. I am using the default setting for the FFT
> and osmocom source blocks. Anyone have any ideas about this or have see
> this behavior before?
>
> Thanks,
>
>
> Jay
>
>
> Jay Radcliffe
> Twitter: @jradcliffe02
> E-Mail: jay.radcliffe at gmail.com
> <https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=jay.radcliffe@gmail.com>
> LinkedIn + Resume: http://www.linkedin.com/in/jradcliffe02
>
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>
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