RTL-SDR Failure to receive analog audio on SDR#

ltginrage

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Sep 28, 2018
Messages
349
Location
North Central, Illinois
I just purchased a RTL SDR on amazon and I have dsd+ installed. I opened sdr# and tried to tune to a local fire dispatch during a incident and was unable to to pickup anything even though it showed activity on the waterfall. I tried the last SO on analog and didnt recive them. Lastly I went to several FM stations and local NWS VHF channel and got nothing. Am I missing something?
 

a417

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Mar 14, 2004
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are you piping the audio out via a virtual cable by accident?
 

a417

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Mar 14, 2004
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Just asking. Lot of people that install SDR# use it to feed a DSD+ instance, so I'm just making sure.
 

lwvmobile

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Apr 26, 2020
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156
Location
Lafayette County, FL
Well, are you getting any audio at all, even outside of SDR#? Could be something simple, like speakers turned down, etc. Or, you might need to check your squelch level, or make sure the software is set to use an audio output device. I'm not overly familiar with SDR#, but you may need to check over your settings just to make sure it knows which audio device to use, and that its not turned down too low, etc.

 

rabbit108

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Joined
Jan 4, 2021
Messages
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Location
S.E. VA
I just purchased a RTL SDR and I have dsd+ installed. I opened sdr# and tried to tune to a local fire dispatch during a incident and was unable to to pickup anything even though it showed activity on the waterfall......I went to several FM stations and local NWS VHF channel and got nothing.
Good suggestions by lwvmobile.

You shouldn't need DSD+ to receive the audio from a local NWS VHF channel.

When you were setting up SDR# for the RTL-SDR dongle did you click on install-rtlsdr?

rtl_test1_1.jpg

2021-01-14 09-39-25 NOAA WX PrtScr_1.jpg


2021-01-14 NOAA WX PC_1.JPG

Video with audio; NOAA in public domain

download and view now; takes a while to download
2021-01-14 09-39-25 NOAA WX.mp4

download and view later
https://www.dropbox.com/s/r3jriyxnz77lt6e/2021-01-14 09-39-25 NOAA WX.mp4?dl=1

I use VLC media player.

If you are still having trouble, I suggest you uninstall SDR# and DSD+ and then reinstall SDR#.

Installing RTL-SDR & SDR Sharp on Win10 Made Easy - TheSmokinApe
 
Last edited:

ltginrage

Member
Joined
Sep 28, 2018
Messages
349
Location
North Central, Illinois
Well, are you getting any audio at all, even outside of SDR#? Could be something simple, like speakers turned down, etc. Or, you might need to check your squelch level, or make sure the software is set to use an audio output device. I'm not overly familiar with SDR#, but you may need to check over your settings just to make sure it knows which audio device to use, and that its not turned down too low, etc.
I am getting audio on dsd+ monitoring a P25 system. Ill check the settings
Good suggestions by lwvmobile.

You shouldn't need DSD+ to receive the audio from a local NWS VHF channel.

When you were setting up SDR# for the RTL-SDR dongle did you click on install-rtlsdr?
I don't remember if we did or not I will go do it again to make sure.
 

ltginrage

Member
Joined
Sep 28, 2018
Messages
349
Location
North Central, Illinois
I've tried everything mentioned above with no results. Yesterday night I messed with alot of settings just playing around with it and I got it to the point I can recive stuff not sure how I did it but I belive it was something with the gain settings.

On to the next project with the RTL-SDR
 

rabbit108

Member
Joined
Jan 4, 2021
Messages
7
Location
S.E. VA
Yesterday night I messed with a lot of settings just playing around with it and I got it to the point I can receive stuff not sure how I did it but I belive it was something with the gain settings.
Were you finally able to receive the analog audio on the NOAA weather channel?
On to the next project with the RTL-SDR
Which RTL-SDR do you have, the RTL-SDR.COM V3 like I have, or another like the Nooelec NESDR SMArTee v2 SDR - Premium RTL-SDR?
 
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