Search found 23 matches

by bobasaurus
Mon Jan 08, 2018 7:27 pm
Forum: Troubleshooting Help
Topic: Misery Installing Dongle Driver in Win7
Replies: 2
Views: 2372

Re: Misery Installing Dongle Driver in Win7

I'm not sure if it applies to win 7, but try my trick here:

viewtopic.php?f=7&t=2031
by bobasaurus
Mon Jan 08, 2018 7:25 pm
Forum: Troubleshooting Help
Topic: Trouble receiving anything?
Replies: 17
Views: 20019

Re: Trouble receiving anything?

I've just started using sharp# and am not having great luck with it,, (will work on it today) but the way to see if everything is right might be to install HDSDR.. I found it very easy to set up and run and (with a little help from here) I get great signals and the entire band (make sure in the RTL...
by bobasaurus
Fri Jan 05, 2018 1:16 am
Forum: Troubleshooting Help
Topic: Trouble receiving anything?
Replies: 17
Views: 20019

Re: Trouble receiving anything?

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...
by bobasaurus
Fri Jan 05, 2018 1:01 am
Forum: Troubleshooting Help
Topic: Only picking up FM? (Diff setup than other post)
Replies: 2
Views: 1810

Re: Only picking up FM? (Diff setup than other post)

Might need an FM bandstop block?
by bobasaurus
Fri Jan 05, 2018 12:58 am
Forum: Troubleshooting Help
Topic: Another Stopped Dongle with a twist
Replies: 5
Views: 2461

Re: Another Stopped Dongle with a twist

Try the win 10 fix I posted here:

viewtopic.php?f=7&t=2031
by bobasaurus
Sat Dec 30, 2017 4:31 am
Forum: Troubleshooting Help
Topic: keenerd rtl-sdr error: disabling direct sampling returns error code
Replies: 0
Views: 1394

keenerd rtl-sdr error: disabling direct sampling returns error code

I'm trying out keenerd's fork of the rtl-sdr library, calling functions from the dll in code. Everything works fine until I try this: rtlsdr_set_direct_sampling(rtlDev, 0); this returns a -1 error code every time, indicating that it failed somehow. Every other setup command returns success codes and...
by bobasaurus
Wed Dec 27, 2017 9:26 pm
Forum: Antennas
Topic: Interesting old antenna, could use help identifying
Replies: 3
Views: 3194

Re: Interesting old antenna, could use help identifying

Some reddit users came up with the answer: it's a folded monopole antenna. There is some confusion about whether it's a 1/4 or 1/8 wave on the top section for determining the frequency.
by bobasaurus
Wed Dec 27, 2017 7:44 pm
Forum: User Projects
Topic: Demodulate FSK
Replies: 6
Views: 18740

Re: Demodulate FSK

You'll need an initial filter for your desired bandwidth, a FM discriminator, and a frequency comparator (using the results of two bandpass filters) to get digital bits from the resulting audio differences. Here is a good reference:

http://www.eas.uccs.edu/~mwickert/ece46 ... s/Lab6.pdf
by bobasaurus
Wed Dec 27, 2017 5:45 pm
Forum: Antennas
Topic: Interesting old antenna, could use help identifying
Replies: 3
Views: 3194

Interesting old antenna, could use help identifying

We have this interestingly-shaped old antenna at work: https://i.imgur.com/dWGA5Mn.jpg There is an N-type connector on the bottom, and threads for mast mounting to a threaded pipe/pole. The J piece is attached with setscrews, possibly adjustable in height a bit. I was told that it might be an old ra...
by bobasaurus
Wed Dec 27, 2017 5:19 pm
Forum: Troubleshooting Help
Topic: Fix for Windows 10 unrecognized RTL-SDR
Replies: 4
Views: 11918

Re: Fix for Windows 10 unrecognized RTL-SDR

Thanks. I use Windows 10 on multiple PCs and have never come across that problem before. But i've added it to the QSG step 8 just in case other people experience the same issue. So far the issue has cropped up on each win 10 machine I've tried (at work and at home), new installations on all of them...