Thank you

So, If I want to get the real power on the channel, what should I do? Basically when I get like -46/-47 dB I'm getting only noise, right?

Thank you very much

--
Luca Bedogni
Academic: http://lbedogni.web.cs.unibo.it
Photo: http://www.lucabedogni.it

On Tue, Apr 16, 2013 at 12:20 PM, Stefan Sydow <st@metafly.info> wrote:

Hi,

-48bB is the theoretical limit for a 8bit ADC.
There are two channels and a bit of filtering but it will not help that
much.

Stefan

Am 16.04.2013 07:35, schrieb Luca Bedogni:

> Hi
> I have an Elonics 4000 USB receiver, and I-m trying to do some
> measurements on the digital television received power in my area.
> Everything works fine, except that the received power is never lower than
> -46 dB, even on channel which are not occupied. I was expecting to get
> values like -120 dB or something similar, instead in my measurements the
> lowest point in any portion of the spectrum is circa -46 dB.
>
> Am I missing something?
>
> Thank you
> Best
>