SDRplay Community Forum

Since there were a number of Ubuntu package updates, I tested again today. Result: SDRPlay is working with the USB ports marked "SS" (I think this means USB 3.0) on my Laptop. On the "normal" USB ports the Laptop still locks hard. I *think* I checked all USB ports during my first tests, but I'm not ...

Thanks Franco for your reply.

Now I know it's not my own fault. I hope sdrplay support is able to look into it soon. Fortunately I kept my working 14.04 installation.

Regards,
Wolf, DK7OB

Hello, today I installed the new Kubuntu 16.04. I installed the SDRplay API and rebuilt all my libraries and qgrx from source. When I start gqrx, it finds the sdrPlay but during initialization the laptop locks hard, I have to press the power button for >5 seconds to recover. Cubicsdr gives same resu...

I did some more detailed investigations regarding setting the gain reductions. Setup: SDRplay connected to Rohde und Schwarz Signal generator SML, frequency 25MHz, level -80dBm. gqrx with SoapySDRPlay driver from git master and latest SDRplay API on Kubuntu 14.04. Observation: When the LNA threshold...

David, thanks for your reply. The name of the API installer is SDRplay_RSP_MiricsAPI-1.9.4.run, and the Web page says "Includes API 1.8.1", but what I see is exactly what you write. The gain jumps around 20dB or so (at least the noise floor jumps that way). This is with the "soapy" driver. There is ...

I have the same or a similar issue. Running gqrx with soapy-sdrplay on Kubuntu 14.04. All software built from latest git. In gqrx I get the gain sliders TUNER and LNAT. The TUNER slider more or less works as expected, but sometimes the noise floor jumps about 20dB when moving the TUNER slider. This ...

I saw that yesterday night. I think it was FT4JA, very rare and only on air since one day or so. I heard them this morning on 17m. VK0EK was on air as well. FT4JA pulled all the big stations away from him so I could get him myself finally. You see the difference in the attached screen shot. VK0EK (n...

I have verified in the code that the frequency is correctly set in MHz when mir_sdr_init is called and in Hz when the call to mir_sdr_SetRf is used. Unfortunately I have no old logs, and right now gqrx is not running with gr-osmosdr any more. I get lots of USB overflow errors and choppy audio. It is...

Hello, while playing with gqrx and SDRPlay with the osmosdr backend, I found that changing the frequency only works when the frequency step is > 10 kHz. Smaller steps have no effect at all. I traced it down to this code in gr_osmosdr sdrplay_source_c::set_center_freq(): if (fabs(diff) < 10000.0) { s...