It's all about the Software

Hi,

i'd love to see an option to set a custom bandwidth in the radio settings. Right now i'm using sdrconsole with an sdrplay tcp server (rtltcp compatible) and the maximum bandwidth i can set is 3.072MHz while the radio can do 8MHz (which should work fine over an 1gbps lan connection).

Thanks and keep up the great work!

Look at the box labeled filter that gives you filter selection generally in the stuff on the left.

Have you tried the "..." button? If not, give it a try. (Betcha you haven't.)

{o.o}

jdow wrote: ↑Sat Apr 17, 2021 10:48 am Look at the box labeled filter that gives you filter selection generally in the stuff on the left.

Have you tried the "..." button? If not, give it a try. (Betcha you haven't.)

{o.o}

Maybe i'm missing something here but i'm not looking for a wider filter, i'm looking to sample (or view) a wider area of the radio spectrum at the same time.
Basically an option to define a custom bandwidth here instead of having to select one from a predefined list:

That is set by the hardware. I don 't think Simon can change that.

You can of course view and record any bandwidth up to that of the radio. There are options to do that.. including pre-setting bands within favourites. For example I have one for the 10m beacon segment, and just that segment will show, whatever bandwidth I have coming from the radio.

Oh THAT bandwidth - listen to what Jim just posted.
{^_^}

cjbazen wrote: ↑Sat Apr 17, 2021 6:27 pm
Maybe i'm missing something here but i'm not looking for a wider filter, i'm looking to sample (or view) a wider area of the radio spectrum at the same time.
Basically an option to define a custom bandwidth here instead of having to select one from a predefined list:

Not sure as not a programmer, but I doubt this is to do with SDRC. Did you see this?

https://www.sdrplay.com/docs/SDRplay_RS ... _Guide.pdf

Quote from top page:
"When the server is run in standard mode, it will be compatible with the RTL TCP protocol. When the
server is run in extended mode, all of the features of the RSPs become available and the full ADC bit rate
up to 14bits is supported. The extended mode requires the use of a compatible client (such as the ExtIO
plugin you can download from our Downloads page, along with the RSP TCP server software)"

Just guessing, but are you in standard or extended mode?

I suspect that the maximum bandwidth/sample rate parameter will be set in the API for the radio or your TCP software rather than in SDRC?

73

Max

It is limited to 3.072MHz because SDR Console doesn't know it is a SDRPlay device.
It believes it is a RTL TCP device and the max sample rate on those is 3.072MHz.
Using your SDRPlay in this way is crippling it as SDR Console can't control the gain settings etc, you have to set them via the terminal adding the parameters to the command string.

Max wrote: ↑Sun Apr 18, 2021 9:39 am Just guessing, but are you in standard or extended mode?

16 bit extended mode, i use their raspberry pi image. I was suprised that console accepts the data stream but i guess sdrplay haven't changed the rtl tcp protocol at all (it's a fork of the rtl tcp server).

m3ghe wrote: ↑Sun Apr 18, 2021 10:41 am It is limited to 3.072MHz because SDR Console doesn't know it is a SDRPlay device.
It believes it is a RTL TCP device and the max sample rate on those is 3.072MHz.
Using your SDRPlay in this way is crippling it as SDR Console can't control the gain settings etc, you have to set them via the terminal adding the parameters to the command string.

Yep, makes sense. I tested multiple sdr software and only found one (sdrsharper) that supports rtltcp and setting a custom bandwidth and setting it to 8MHz manually worked fine.
You are right tho, this isn't a very good way of using the sdrplay over the network, maybe it would be better to ask for a new radio definition for sdrplay-tcp devices that are using their tcp server (guessing this is alot more work to implement tho).

Just to add, to use the rsp_tcp extended server the software needs to be using the ExtIO_RSP_TCP.dll or similar. SDR Console doesn't.

cjbazen wrote: ↑Sun Apr 18, 2021 1:33 pm Yep, makes sense. I tested multiple sdr software and only found one (sdrsharper) that supports rtltcp and setting a custom bandwidth and setting it to 8MHz manually worked fine.

HDSDR supports rsp_tcp using the RSP TCP ExtIO.dll and works up to 10 MSPS.
I don't like that software though, I only use it for comparison during testing.