Trouble receiving anything?

Need help installing or figuring out something about your SDR? Ask here.
AI8Y
Posts: 3
Joined: Mon Apr 11, 2016 6:16 pm

Trouble receiving anything?

Post by AI8Y » Mon Apr 11, 2016 6:25 pm

I am new to SDR and need your help! I purchased a RTL.SDR/USB (NEW R820T2) reciever and all I get is "white" noise. For the life of me I can not get any reception of any kind. I downloaded SDR Sharp and am having nothing but trouble. What am I doing wrong? Should I download and use a different program? The SDR receiver did not come with any software. Please help! Thanks 8-)

Kenn
Posts: 51
Joined: Fri Apr 08, 2016 8:43 pm

Re: Trouble receiving anything?

Post by Kenn » Mon Apr 11, 2016 8:44 pm

SDR# is a pretty good app. I've also used CubicSDR, Gqrx and SDRTrunk. SDR# seems to be as least as good as any of them.

If you're hearing static then your sound card and dongle are most likely working. A few thoughts ...

- What are you using for an antenna? Makes a big difference!

- Check you gain settings, if I recall by default SDR# starts off with it set way down.

- Check mode, ie AM, FM wide or narrow, USB, LSB etc ...

- Look for signals in the FM broadcast band 88-108 if you're in the US. Those will be wideband FM.

- Look for NWR (National Weather Radio) stations, those are narrowband FM.

162.400
162.425
162.450
162.475
162.500
162.525
162.550


--Kenn

AI8Y
Posts: 3
Joined: Mon Apr 11, 2016 6:16 pm

Re: Trouble receiving anything?

Post by AI8Y » Mon Apr 11, 2016 10:45 pm

Kenn, I am using an "endfed wire cut at 33 feet long out in my yard. I will continue to try to get this thing to work. My hair is thinning as I type.
Thanks I will give your suggestions a try.

rtlsdrblog
Site Admin
Posts: 2375
Joined: Mon Nov 19, 2012 11:54 pm

Re: Trouble receiving anything?

Post by rtlsdrblog » Mon Apr 11, 2016 10:47 pm

Can you show a link to the exact RTL-SDR model that you purchased? Also what frequencies are you trying to receive with that antenna?

AI8Y
Posts: 3
Joined: Mon Apr 11, 2016 6:16 pm

Re: Trouble receiving anything?

Post by AI8Y » Tue Apr 12, 2016 4:34 pm

Here is a picture of my RTL.SDR. I have tried using both the "UV" & "HF" ports and still all I get is noise. I have tried the gain at 100% and all the way down as low as it will go and all I get is noise. I have tried all of the modes from CW to USB, LSB. And still nothing but noise. This thing cant be that hard to figure out but yet it has me stumped. I will keep trying, and again any help would be appreciated. Thanks!
Attachments
RTL.SDR.JPG
RTL.SDR.JPG (117.82 KiB) Viewed 15931 times

Kenn
Posts: 51
Joined: Fri Apr 08, 2016 8:43 pm

Re: Trouble receiving anything?

Post by Kenn » Tue Apr 12, 2016 9:56 pm

33' of wire should pick up something! I get a lot of FM broadcast with a dipole of similar length. I think these devices are an RTL dongle with a separate up-converter board in them? Maybe you want to check inside and see if things are connected. Just an idea ...

-K

rtlsdrblog
Site Admin
Posts: 2375
Joined: Mon Nov 19, 2012 11:54 pm

Re: Trouble receiving anything?

Post by rtlsdrblog » Tue Apr 12, 2016 10:32 pm

What frequencies have you been trying to receive? That's a direct sampling modded RTL-SDR, so to receive HF you will need to the the Q-branch sampling mode in SDR# (in the configuration screen change from Quadrature mode to Q-branch). The HF antenna goes into the HF plug, and the VHF antenna goes into the UV plug. For VHF+ use Quadrature mode.

steve
Posts: 7
Joined: Wed Apr 27, 2016 6:26 pm

Re: Trouble receiving anything?

Post by steve » Thu Jun 09, 2016 1:31 pm

did you get your issues resolved as i am having the same thing.... all the settings in the software are correct but loads of noise and all i can receive is fm radio stations.. Any tips...????

ch1p2014
Posts: 1
Joined: Fri Oct 21, 2016 10:01 am

Re: Trouble receiving anything?

Post by ch1p2014 » Fri Oct 21, 2016 10:05 am

hi just purchased the same device but receiving nothing :( not even fm radio channels

boxman
Posts: 1
Joined: Sat Dec 30, 2017 12:38 pm

Re: Trouble receiving anything?

Post by boxman » Sat Dec 30, 2017 12:46 pm

Hi All:
I purchased the NooElec NESDR Mini USB RTL-SDR & ADS-B Receiver Set, RTL2832U & R820T Tuner, MCX Input. Low-Cost Software Defined Radio Compatible with Many SDR Software Packages. R820T Tuner & ESD-Safe Antenna Input via Amazon, and installed software per the instructions on https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/. I'm using the 10 cm whip antenna, inside, which came with the package, so I'm not expecting miracles. I cranked the gain up full, but see absolutely no signals, not even noise. I attached a signal generator to a short antenna nearby, expecting at least to see a spike at its frequency, but 'nada'.
Any suggestions?
Ray 4X1RB

Post Reply