Can't go above 1.5Mhz bandwidth or choppy audio
Can't go above 1.5Mhz bandwidth or choppy audio
Hi All,
New to the SDRplay and have just received an RSP2. I'm running SDRuno under Windows 8.1 on a 64bit laptop, core i-5 with 8gig of RAM, 2 cores.
In SDRuno, if I set SR (Mhz) to anything above 2Mhz which gives me an IF BW of 1.536Mhz I get chopped up audio. The Sys utlization reported in SDRuno looks ok (around 50%) and Task Manager shows the CPU at around 20% (not sure the difference between these two values). I see other posts referencing to turn PERF of, but I don't see this in the version I am running (latest?).
Also would like to understand if its possible for me to set both SR and IFBW independently as I cant see how to do this.
New to the SDRplay and have just received an RSP2. I'm running SDRuno under Windows 8.1 on a 64bit laptop, core i-5 with 8gig of RAM, 2 cores.
In SDRuno, if I set SR (Mhz) to anything above 2Mhz which gives me an IF BW of 1.536Mhz I get chopped up audio. The Sys utlization reported in SDRuno looks ok (around 50%) and Task Manager shows the CPU at around 20% (not sure the difference between these two values). I see other posts referencing to turn PERF of, but I don't see this in the version I am running (latest?).
Also would like to understand if its possible for me to set both SR and IFBW independently as I cant see how to do this.
Last edited by rack201 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason
Re: Can't go above 1.5Mhz bandwidth or choppy audio
Strange. I run my RSP2 with SDRUno on my 'shack laptop' without any problem at all SR's and decs. The laptop is a secondhand Win 8 enterprise machine with an i3-3110m processor (2 core) at around 2.4 GHz with 4 Gig of RAM and SDRUno coasts along without any significant CPU loading (maybe 15% tops when using just one VRX), so I'm wondering why yours is having a problem. It may be worth looking to see if you have a lot of processes running in the background, or if your virus/malware protection is one of those that is always running. I know one thing that caused my old Win7 laptop a load of slowdown was the Windows Update stuff constantly looking for new updates. That was a known bug on Win7 though.
If you haven't already, join the SDRPlay Facebook group, there are plenty of PC-savvy people on there and they are a great bunch who will help if they can. Good luck with it.
If you haven't already, join the SDRPlay Facebook group, there are plenty of PC-savvy people on there and they are a great bunch who will help if they can. Good luck with it.
Reason: No reason
Andy
Re: Initial impressions - great!
Thanks for the reply. It seems to be related to the level of zoom I have set on the spectrum windows. If I have multiple VRXs running (2-3) and zoom any of them in to the maximum, the audio drops occurs. Anything lower than full zoom and I can run a higher sample rate no problem.
I am wrapped with the SDRplay and the SDRuno software. Only had it a few days and have been able to monitor marine VHF, decode AIS and ADS-B, DAB radio. I threw up a quick dipole cut for 40 meters with some old speaker wire on the back veranda and have been able to receive from all over Australia (where I am currently) as well as Puerto Rico!
I am wrapped with the SDRplay and the SDRuno software. Only had it a few days and have been able to monitor marine VHF, decode AIS and ADS-B, DAB radio. I threw up a quick dipole cut for 40 meters with some old speaker wire on the back veranda and have been able to receive from all over Australia (where I am currently) as well as Puerto Rico!
Last edited by rack201 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason
Re: Can't go above 1.5Mhz bandwidth or choppy audio
Try upping the sample rate (labeled "SR (MHz)" in the MAIN panel.
-Noel
-Noel
Last edited by NoelC on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason
Re: Can't go above 1.5Mhz bandwidth or choppy audio
Sorry, I meant "reduce" the SR.
-Noel
-Noel
Last edited by NoelC on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason