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by sdrplay
Mon Mar 14, 2016 11:09 pm
Forum: New Users' experiences
Topic: Compiling for Raspberry Pi?
Replies: 2
Views: 2885

Re: Compiling for Raspberry Pi?

what happens when you run...

SoapySDRUtil --probe=sdrplay

Best regards,

SDRplay Support
by sdrplay
Fri Mar 11, 2016 8:56 pm
Forum: Code Corner
Topic: SDRPLAY linux commandline tools?
Replies: 83
Views: 57665

Re: SDRPLAY linux commandline tools?

The RTL device has about 50dB of gain so as a rough approximation I just threw in 78-gain to get something working without having to specifically work in gain reduction. The gain reduction is different in different bands, so that's why I stuck with 78. The LNA switching also affects the overall syst...
by sdrplay
Fri Mar 11, 2016 7:20 pm
Forum: Code Corner
Topic: SDRPLAY linux commandline tools?
Replies: 83
Views: 57665

Re: SDRPLAY linux commandline tools?

I just checked the code and forgot that I use 78-gain to produce the gain reduction value for the RSP.

So you are actually applying a gain value - if you needed a lower value then you are probably overloading the RSP.

Best regards,

SDRplay Support
by sdrplay
Fri Mar 11, 2016 1:51 pm
Forum: Code Corner
Topic: SDRPLAY linux commandline tools?
Replies: 83
Views: 57665

Re: SDRPLAY linux commandline tools?

I have tested out csdr and there is a csdr-fm script.

I edited it, changed rtl_sdr to play_sdr...

playsdr-fm 89.1 40

works fine for me. Do you have a specific case that doesn't work? Have you tried that test script?

Best regards,

SDRplay Support
by sdrplay
Thu Mar 10, 2016 9:19 pm
Forum: Code Corner
Topic: SDRPLAY linux commandline tools?
Replies: 83
Views: 57665

Re: SDRPLAY linux commandline tools?

What gain (or gain reduction in the RSP's case) are you using?

Let me know where to get csdr from and what command line you are using and I'll check out the code.

Best regards,

SDRplay Support
by sdrplay
Thu Mar 10, 2016 8:06 am
Forum: SDRplay related
Topic: Request : Out of range warning
Replies: 9
Views: 5285

Re: Request : Out of range warning

If you don't want to download the zip file, create a new text file and call it lower_freq.reg (make sure it doesn't have a hidden .txt file extension). Then copy/paste the contents from here: Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\SOFTWARE\SDRplay\Settings] "LowerFqLimit"=...
by sdrplay
Thu Mar 10, 2016 7:25 am
Forum: SDRplay related
Topic: Request : Out of range warning
Replies: 9
Views: 5285

Re: Request : Out of range warning

To set a lower frequency limit... Make sure the SDR application isn't running. Extract the lower_freq.reg file from the lower_freq.zip file attached to this post. Edit the lower_freq.reg file in your favourite text editor and change the following line to your required value... (NOTE: The value is in...
by sdrplay
Wed Mar 09, 2016 6:07 pm
Forum: SDRplay related
Topic: Request : Out of range warning
Replies: 9
Views: 5285

Re: Request : Out of range warning

The upper 2GHz limit is the upper limit. The lower limit of 100kHz can be removed by adding a registry entry (make sure HDSDR isn't running)... \HKEY_CURRENT_USER\SOFTWARE\SDRplay\Settings Add a key called LowerFqLimit and set a value in kHz as your lower allowable limit. 0 should also work. Perform...
by sdrplay
Wed Mar 09, 2016 10:21 am
Forum: Code Corner
Topic: SDRPLAY linux commandline tools?
Replies: 83
Views: 57665

Re: SDRPLAY linux commandline tools?

github repository is up. If anyone wants to add code to it, please send it to software@sdrplay.com with a description and we'll get it pushed up.

https://github.com/SDRplay/examples

Best regards,

SDRplay Support
by sdrplay
Wed Mar 09, 2016 12:28 am
Forum: Code Corner
Topic: SDRPLAY linux commandline tools?
Replies: 83
Views: 57665

Re: SDRPLAY linux commandline tools?

For 16bit samples you will need to do 2 things... Firstly, the following lines will need to change from... for (i=0; i < samplesPerPacket; i++) { buffer[j++] = (unsigned char) (ibuf[i] >> 8); buffer[j++] = (unsigned char) (qbuf[i] >> 8); } to for (i=0; i < samplesPerPacket; i++) { buffer[j++] = ibuf...

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