Page 1 of 1

RTL SDR dongle with lower sample rate than 220KHz

Posted: Tue Dec 04, 2018 9:59 am
by jeromebi
Does anyone know if there is any way to set the sample rate of RTL SDR dongle (2832U) to a lower value than 220KHz ?

I am currently using RTL SDR 2832 USB stick V3. The default sample rate set in the code is currently 2.4MHz (code is giving "const int DEFAULT_SAMP_RATE = 2400000;").
I can set the sample rate to a lower frequency, but when I set it to a lower value than 220KHz, I got an error which seems to come from the RTL SDR dongle driver.

Is there any way to allow my RTL SDR dongle driver (RTL 2832U) to accept a lower sample rate than 220KHz, which seems to be the minimum accepted yet ?

Otherwise, are you aware of any other RTL SDR dongle than 2832U that would accept a lower sample rate (ideally lower than 125KHz) ?

Thanks a lot to anyone who can provide feedback about it.

Re: RTL SDR dongle with lower sample rate than 220KHz

Posted: Tue Dec 04, 2018 11:31 pm
by Evap1
Hi Jeromebi,
There used to be a set of tools on the rtl-sdr.ru site.
But they will only work with older versions of sdr#
V1500 and some earlier versions.
Please see picture.
Evap1
Narrow Bandwidth1.png
Narrow Bandwidth1.png (693.16 KiB) Viewed 5033 times

Re: RTL SDR dongle with lower sample rate than 220KHz

Posted: Wed Dec 05, 2018 2:34 am
by Evap1
Hi Again Jeromebi,
Some more of the options available.
Evap1
Plates1a.png
Plates1a.png (224.21 KiB) Viewed 5019 times

Re: RTL SDR dongle with lower sample rate than 220KHz

Posted: Wed Dec 05, 2018 6:57 am
by Evap1
Sorry,
forgot to show device sample rate dialogue box options.
See below.
Plate3.png
Plate3.png (60.51 KiB) Viewed 5003 times