User defineable Bandwidth

🙋 If you want a new feature or a change to the software then add your request here.

If it's not here then it's not going to happen.
cjbazen
Posts: 6
Joined: Fri Apr 16, 2021 5:44 pm

User defineable Bandwidth

#1

Unread post by cjbazen »

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!

jdow
Posts: 800
Joined: Mon Aug 10, 2020 8:17 pm

Re: User defineable Bandwidth

#2

Unread post by jdow »

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}

cjbazen
Posts: 6
Joined: Fri Apr 16, 2021 5:44 pm

Re: User defineable Bandwidth

#3

Unread post by cjbazen »

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:

Image

User avatar
G0OFE
Posts: 435
Joined: Thu Aug 06, 2020 7:33 am
Location: Sunny Sunny Bournemouth IO90BR
Contact:

Re: User defineable Bandwidth

#4

Unread post by G0OFE »

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.
Jim, Bournemouth IO90BR
Image

jdow
Posts: 800
Joined: Mon Aug 10, 2020 8:17 pm

Re: User defineable Bandwidth

#5

Unread post by jdow »

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

Online
Max
Posts: 858
Joined: Thu Aug 13, 2020 9:47 am

Re: User defineable Bandwidth

#6

Unread post by Max »

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:

Image
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

User avatar
m3ghe
Posts: 140
Joined: Sat Aug 08, 2020 2:58 pm
Location: Bedford
Contact:

Re: User defineable Bandwidth

#7

Unread post by m3ghe »

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.
Martin
m3ghe
IO92sc
G-QRP club 6129
Use my online radios http://remoteradio.myddns.me/ or http://remoteradio.changeip.org/

cjbazen
Posts: 6
Joined: Fri Apr 16, 2021 5:44 pm

Re: User defineable Bandwidth

#8

Unread post by cjbazen »

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).

User avatar
m3ghe
Posts: 140
Joined: Sat Aug 08, 2020 2:58 pm
Location: Bedford
Contact:

Re: User defineable Bandwidth

#9

Unread post by m3ghe »

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.
Martin
m3ghe
IO92sc
G-QRP club 6129
Use my online radios http://remoteradio.myddns.me/ or http://remoteradio.changeip.org/

User avatar
m3ghe
Posts: 140
Joined: Sat Aug 08, 2020 2:58 pm
Location: Bedford
Contact:

Re: User defineable Bandwidth

#10

Unread post by m3ghe »

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.
hdsdr rsp tcp test.JPG
Martin
m3ghe
IO92sc
G-QRP club 6129
Use my online radios http://remoteradio.myddns.me/ or http://remoteradio.changeip.org/

Post Reply