I developed some DAB, DRM and other SDR software. The main program for DAB decoding is Qt-DAB.
I got a comment from someone that the extio module only handled 50 Mhz samplerate or more, while for DAB one needs (just over) 2
and my software cannot handle (yet?) unspecified input with very high sampletates
There is probably an interface library for the device, and it would help to have a description of such an API.
I am perfectly wwilling to write some interface software, after all the device interface for Qt-DAB is pretty straightforward
any help here would be appreciated
best
jan
API description
Re: API description
Did you post this to the right place? There is no addon API for Simon's SDR suite. I am not sure what you mean about the extio module. SDRC does not speak extio for signal sources.
{^_^}
{^_^}
Re: API description
I do not know whether this is the right place or not.
I got a request/comment from someone who tried to use the RX888 - using an Extio-handler for the RX888 - on my Qt-DAB. The interface for extio that I have in Qt-DAB is cabable of some resamping (i.e. 2 MHz -> 2.048, up to 3 or 4 MHz -> 2.048) and filtering (especially for the AIRspy)
The guy ffrom the question told me that he could send samples with a rate of 50 M, then of course the question is about filtering.
The DAB band runs roughly from 175 - 230 MHz, so the RX-888 gets almost the whole band, and extracting a subband of 1.5 MHz with a rate of 2.048 < takes dome filtering and decimation, so I was/am wondering if somewhere there is an API description that provides some handles to do that.
I got a request/comment from someone who tried to use the RX888 - using an Extio-handler for the RX888 - on my Qt-DAB. The interface for extio that I have in Qt-DAB is cabable of some resamping (i.e. 2 MHz -> 2.048, up to 3 or 4 MHz -> 2.048) and filtering (especially for the AIRspy)
The guy ffrom the question told me that he could send samples with a rate of 50 M, then of course the question is about filtering.
The DAB band runs roughly from 175 - 230 MHz, so the RX-888 gets almost the whole band, and extracting a subband of 1.5 MHz with a rate of 2.048 < takes dome filtering and decimation, so I was/am wondering if somewhere there is an API description that provides some handles to do that.
- Simon G4ELI
- Posts: 2136
- Joined: Thu Aug 06, 2020 7:27 am
- Location: Mawnan Smith
- Contact:
Re: API description
There isn't really an API for the RX288, it's a question of reading the ExtIO code on github.
Re: API description
Unless I'm missing something the RX888 MKII won't cover almost all the DAB band without a transverter, above 70MHz it uses an R828D tuner limiting bandwidth to 10MHz.
Re: API description
You have that correct, ukdx.
{^_^}
{^_^}