It should like any other receiver have a certain noise floor nf but this figure was hard to find on the internet so that i decided to measure it myself.
Sdr noise floor reduction.
I ran two receivers rsp2 and perseus side by side sharing the same antenna on the same frequency.
What else can i do to reduce the noise floor and get rid of the rfi on 2 meters.
I ve already started using a usb extension cable instead of plugging the dongle into the pc.
Found some dirty wall warts and got rid of them.
Working with two power coops i got.
My objective was to calculate sdr spectrum noise floor from first principles using the above formula.
My noise floor on 160m in the daytime was s9 30.
With a portable radio and a loop antenna i drove a lot of back roads mapping the noisy power poles.
First i measured noise using cw mode with a 100 hz bandwidth.
I ve recently received an rtl sdr dongle and i m picking up a lot of noise that is probably coming from my pc especially a lot of spikes on the 2m band.
Sorry i i just read the link to mariners blog so maybe external monitor is not used i still think it is the computer generating the noise wrap as many turns that will fit of the usb cable that connects to the dongle through a.
I turned off all the power to my house to assure myself that the noise was not from a wall wart or anything else.
September 12 2020 11 39 pm peterr vk4khp.
Sdr spectrum noise floor running the numbers.
Written by admin posted in rtl sdr tagged with noise radio frequency interference rfi rtl sdr rtl2832u 8 comments.
In this blog i will describe how i measured the nf the.