NTekNiklaus2003
Newbie
- Joined
- Apr 21, 2020
- Messages
- 4
Hi all,
Please pardon my newbiness to SDRs and decoding as a whole. Recently I acquired a NooElec NESDR Smart V4 (R820T) to play around with, and so far it's been pretty good decoding pager/ACARS data and just using as a scanner at my desk in general. I then became interested in attempting to listen in to my counties P25 Phase II radio system, and got pretty far in trying to get DSD Plus and SDRTrunk to work.
I created a new channel as followed in a tutorial, went to source, selected Tuner, put in the central frequency for the county, and set the preferred tuner to the R820T. I set up P25 Phase II in the decoder section and enabling the auto-detect system settings option. I proceeded to hit save and start and got the following message:
"Channel could not be started. This is likely because there are no tuner channels available."
The latest message command window that runs alongside the GUI showed this:
"04:33:35.286 INFO i.g.d.d.f.c.PolyphaseChannelManager - Can't provide DDC for Channel:855162500 (855156250-855168750) due to channelizer frequency [1.011E8] and sample rate [2400000.0] [28MB/49MB 59%]".
I researched this message further and found two solutions, either switching USB ports, or going into device manager and setting the SDR up to show as "USB Composite Device". Something possibly worth mentioning here is the fact that my SDR used a tool to change the default drivers in order to set it up. By the way, I am running Windows 10 version 1909.
Afterwards I went to the tuners menu and clicked around a little bit, which then led to another message:
"R820T Tuner Controller - couldn't apply the sample rate setting [2.400 MHz] USB error 9: error writing byte buffer: Pipe error"
I noted that the waterfall is flowing just fine, but after this error message it and sometimes the program just completely freeze after this point.
I also added another channel for my local fire department (UHF, NFM) to test if I get the same results from it, and that was the case.
I'm unsure on how to continue, any help would greatly be appreciated. Thank you.
Please pardon my newbiness to SDRs and decoding as a whole. Recently I acquired a NooElec NESDR Smart V4 (R820T) to play around with, and so far it's been pretty good decoding pager/ACARS data and just using as a scanner at my desk in general. I then became interested in attempting to listen in to my counties P25 Phase II radio system, and got pretty far in trying to get DSD Plus and SDRTrunk to work.
I created a new channel as followed in a tutorial, went to source, selected Tuner, put in the central frequency for the county, and set the preferred tuner to the R820T. I set up P25 Phase II in the decoder section and enabling the auto-detect system settings option. I proceeded to hit save and start and got the following message:
"Channel could not be started. This is likely because there are no tuner channels available."
The latest message command window that runs alongside the GUI showed this:
"04:33:35.286 INFO i.g.d.d.f.c.PolyphaseChannelManager - Can't provide DDC for Channel:855162500 (855156250-855168750) due to channelizer frequency [1.011E8] and sample rate [2400000.0] [28MB/49MB 59%]".
I researched this message further and found two solutions, either switching USB ports, or going into device manager and setting the SDR up to show as "USB Composite Device". Something possibly worth mentioning here is the fact that my SDR used a tool to change the default drivers in order to set it up. By the way, I am running Windows 10 version 1909.
Afterwards I went to the tuners menu and clicked around a little bit, which then led to another message:
"R820T Tuner Controller - couldn't apply the sample rate setting [2.400 MHz] USB error 9: error writing byte buffer: Pipe error"
I noted that the waterfall is flowing just fine, but after this error message it and sometimes the program just completely freeze after this point.
I also added another channel for my local fire department (UHF, NFM) to test if I get the same results from it, and that was the case.
I'm unsure on how to continue, any help would greatly be appreciated. Thank you.