Search found 980 matches

by sdrplay
Fri Jul 05, 2019 2:04 pm
Forum: SDRuno
Topic: ADS-B questions (beginner)
Replies: 4
Views: 970

Re: ADS-B questions (beginner)

I would recommend looking through our user guide... https://www.sdrplay.com/docs/SDRplay_ADS-B_User_Guide.pdf This explains how you can get the aircraft information into Virtual Radar Server software which you can then view on a map. The difference between interactive and non-interactive mode is tha...
by sdrplay
Thu Jul 04, 2019 1:44 pm
Forum: SDRplay related
Topic: SDRPlay Crashing During Memory Scan
Replies: 1
Views: 924

Re: SDRPlay Crashing During Memory Scan

That is a known issue and has been fixed for the next release 1.32

If you avoid having non-numerical characters in the frequency field this won't be a problem.

Best regards,

SDRplay Support
by sdrplay
Tue Jul 02, 2019 6:42 pm
Forum: Code Corner
Topic: trying to reduce dc offset with low if modes, api differences
Replies: 4
Views: 1715

Re: trying to reduce dc offset with low if modes, api differences

In the IQ stream, the centre will be at the beginning of the data, so I would check that you have the right number of points, etc. - I would also try other frequencies to see if you get the same result.

Best regards,

SDRplay Support
by sdrplay
Mon Jul 01, 2019 9:51 pm
Forum: Code Corner
Topic: trying to reduce dc offset with low if modes, api differences
Replies: 4
Views: 1715

Re: trying to reduce dc offset with low if modes, api differences

There is always a DC spike, the IF mode determines where the spike appears. In Zero IF mode, the DC spike is at the LO frequency (0 Hz offset). Software is used to remove the spike which can also remove any signal at the LO frequency (which is why you need to apply an offset between the LO and VFO f...
by sdrplay
Mon Jul 01, 2019 1:18 pm
Forum: SDRplay related
Topic: RSPA1 : Sampling rate vs Bandwidth
Replies: 5
Views: 2734

Re: RSPA1 : Sampling rate vs Bandwidth

If you use the rule to make sure the IFBW is equal to or lower the final sample rate (after decimation), this will avoid any aliasing issues.

SDRplay Support
by sdrplay
Mon Jul 01, 2019 12:32 pm
Forum: SDRplay related
Topic: RSPA1 : Sampling rate vs Bandwidth
Replies: 5
Views: 2734

Re: RSPA1 : Sampling rate vs Bandwidth

The IF BW values are fixed to those that I listed for both Low IF and Zero IF mode. From a processing load perspective (as well as visual) it would make more sense to specify 2 MHz sample rate, decimation of 4 and a IFBW of 300 kHz this will give you a final sample rate of 500 kHz and only 100 kHz e...
by sdrplay
Sun Jun 30, 2019 5:22 pm
Forum: SDRplay related
Topic: Frequency shift for LNB/Es'Hail
Replies: 5
Views: 3644

Re: Frequency shift for LNB/Es'Hail

Maybe my misunderstanding, but there is no fault with the RSP product or the drivers. As long as the specified RF frequency to the RSP API is within the 1 kHz to 2 GHz range that we say on our datasheets, then the API and the RSP will function correctly. SDRuno is a free download, it's not part of o...
by sdrplay
Fri Jun 28, 2019 3:33 pm
Forum: General
Topic: Raspberry Pi4B
Replies: 6
Views: 2027

Re: Raspberry Pi4B

I have tried many SBCs and have them all working with RSPs... RPi3 - RPi4 Asus Tinkerboard Beaglebone Black Orange Pi Odroid C2 Odroid XU4 Pine64 etc. I got the 4GB version of the RPi4B and now have just put it in a case with a fan. CPU Temp is constant at 46deg (it was running closer to 80deg last ...
by sdrplay
Thu Jun 27, 2019 11:23 pm
Forum: General
Topic: Raspberry Pi4B
Replies: 6
Views: 2027

Re: Raspberry Pi4B

Yes had CubicSDR running this evening - looks like I can run up the sample rate higher than with RPi3B+, but only a quick look. Waiting for fan to arrive before being able to run proper comparative tests.

Looking good though. We'll put an image together when time permits.

Best regards,

Andy
by sdrplay
Wed Jun 26, 2019 11:00 am
Forum: SDRuno
Topic: Diversity Demo in Xenia
Replies: 2
Views: 1131

Re: Diversity Demo in Xenia

We have been working hard on getting 1.32 released and after Dayton there were some changes that needed to be made to make the system more robust. The software has been with beta testers and we're working on the last few issues and hope to get it released asap. Yes, I was convinced with our early te...