Search found 53 matches

by DK7OB
Fri May 05, 2017 8:37 am
Forum: SDRuno
Topic: Audio latency and CW QSK
Replies: 2
Views: 689

Re: Audio latency and CW QSK

Unfortunately if have no suggestion, but I am suffering from the same problem. How long is your delay/latency? I measured about 130ms from antenna input to audio output on a good day (it depends a bit how the audio output buffer size is adjusted) and that pretty much destroys any QSK. I am running L...
by DK7OB
Sun Feb 26, 2017 9:22 am
Forum: General
Topic: RSP2 and Linux
Replies: 5
Views: 2292

Re: RSP2 and Linux

I just noticed in the document that for CubicSDR I have to build wxwidgets from source. On Ubuntu 16.04 I just installed wxwidgets and wxwidgets devel packages and could build CubicSDR just fine and it seems to work without problems. Is there a problem with the standard wxwidgets that I just didn't ...
by DK7OB
Tue Feb 21, 2017 2:57 pm
Forum: SDRplay related
Topic: SDR play connected via IF out and transmit
Replies: 2
Views: 1214

Re: SDR play connected via IF out and transmit

I have my RSP1 connected to the RX antenna output of my TS590SG without any protection. No problems so far. I also tested with an active whip antenna connected directly to my RSP1. The whip delivers about 10 dBm when I transmit. This might be considered dangerous, but no problems so far. Transmit po...
by DK7OB
Sat Jan 28, 2017 7:12 pm
Forum: New Users' experiences
Topic: CubicSDR working fine, Gqrx not so good.
Replies: 7
Views: 3049

Re: CubicSDR working fine, Gqrx not so good.

Got soapy working with gqrx needed to change the driver string to 'driver=sdrplay,soapy=0' now to work out how to change the antenna. Seems to be unsupported: /******************************************************************* * Antenna API *********************************************************...
by DK7OB
Sat Jan 28, 2017 8:31 am
Forum: New Users' experiences
Topic: CubicSDR working fine, Gqrx not so good.
Replies: 7
Views: 3049

Re: CubicSDR working fine, Gqrx not so good.

I am running gqrx with the soapysdr (not the gr.osmosdr non free) driver and have seen this same behavior. gqrx sets the default bandwidth to 0 and expects that in this case the driver calculates the optimum bandwidth for the configured sample rate (I think that's a gnu-radio convention). With soapy...
by DK7OB
Thu Jan 05, 2017 1:13 pm
Forum: Code Corner
Topic: SoapySDDRPlay not working
Replies: 16
Views: 5620

Re: SoapySDDRPlay not working

Yes, all of our changes were pushed back into the main SoapySDRPlay github repository. Thanks a lot! It's working fine here with gnuradio and gqrx. The new gain setting is much better than the old one. The audio latency seems to be smaller now, but this is not confirmed by measurements yet. At leas...
by DK7OB
Wed Jan 04, 2017 7:22 pm
Forum: Code Corner
Topic: DC removal not working with API 2.09
Replies: 2
Views: 1446

Re: DC removal not working with API 2.09

The DC removal was working, but due to a problem in gqrx it could not be disabled. This is now fixed. But still the DC spike is much more visible than with API 1.97 and matching soapysdrplay. The spike is even worse with gain reduction at maximum. I attach 3 screen shots: 1. DC correction disabled 2...
by DK7OB
Wed Jan 04, 2017 11:30 am
Forum: Code Corner
Topic: DC removal not working with API 2.09
Replies: 2
Views: 1446

DC removal not working with API 2.09

I am running gqrx on Ubuntu 16.04. After I updated to API 2.09 and newest SoapySDRPlay from github the DC correction does not work any more. I see a DC spike in the spectrum which was not the case with the API 1.97. If I enable DC removal in gqrx, I get the following output on the console: mir_sdr_S...
by DK7OB
Wed Jan 04, 2017 10:40 am
Forum: Code Corner
Topic: SoapySDDRPlay not working
Replies: 16
Views: 5620

Re: SoapySDDRPlay not working

Just to make sure that I am working with the latest SoapySDRPlay: This commit in github cae555 Updates for API 2.09 including RSP1 and RSP2 contains all the work done by the sdrplay team? It's working for me (Ubuntu 16.04 and gqrx 2.6 + modifications) and I noticed the ppm correction is now implemen...
by DK7OB
Wed Dec 28, 2016 12:04 pm
Forum: SDRuno
Topic: daul band
Replies: 3
Views: 1314

Re: daul band

Hi,

Simultaneous reception of 20m and 17m should basically work, since both bands are in the 5 MHz frequency range you get with 10 MHz sampling rate and LO set to 16 MHz.

I can not test with SDRUno since I am running Linux with gqrx. See attached screenshot.

Regards,
Wolf, DK7OB

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