Search found 28 matches

by Stromeko
Thu Jul 02, 2020 2:19 pm
Forum: Other SDR Devices
Topic: SPECTRAN V6 with 245MHz IQ streaming via USB?
Replies: 3
Views: 240

Re: SPECTRAN V6 with 245MHz IQ streaming via USB?

I just found this new USB SDR from Aaronia: https://aaronia.com/downloads/#tab_4 How can they stream 245MHz IQ via USB? I dont get it. Whats the price tag? Dual USB3.2 gives you 2x2x10Gibit/s raw bandwidth to play with (assuming they use lane bonding), and streaming 2x16bitx245MHz "only" needs 7.3G...
by Stromeko
Sat Jun 27, 2020 7:05 am
Forum: RTL-SDR Discussion
Topic: ADSB Beginner Advice Please.
Replies: 2
Views: 246

Re: ADSB Beginner Advice Please.

I'm new to this subject and would really appreciate some advice! My top level use case is - I'd like to receive aircraft tracks from ADSB and get that data into a .NET C# application that I will write. I'm thinking of using (from Amazon) "NESDR Mini 2 USB RTL-SDR & ADS-B Receiver Set, RTL2832U & R8...
by Stromeko
Tue Apr 21, 2020 3:22 pm
Forum: Troubleshooting Help
Topic: cannot detect airplanes
Replies: 3
Views: 861

Re: cannot detect airplanes

GIBABYTE U7300 wrote:
Tue Apr 21, 2020 1:11 pm
Hi i would like to detect some airplanes above me. I have GIGABYTE GT-U7300. I found on internet that it contains RTL2832U/FC0012.
That tuner chip only works from 22 - 948.6 MHz.
by Stromeko
Fri Apr 10, 2020 7:00 am
Forum: User Projects
Topic: Impedance matching to Q branch
Replies: 2
Views: 3454

Re: Impedance matching to Q branch

I want to use a tuned ferrite antenna with my RTL-SDR. From what I understand at the point of resonance, only the real (resistive) impedance remains. This should be a few ohms for the resistance of the wire, capacitor and ferrite losses. In a pinch you could try a 9:1 balun in reverse. An active an...
by Stromeko
Wed Apr 08, 2020 10:50 am
Forum: User Projects
Topic: OpenEar will be new software for listening to Voice and data of protocols(Tetra, DMR, MPT,...)
Replies: 74
Views: 31363

Re: OpenEar will be new software for listening to Voice and data of protocols(Tetra, DMR, MPT,...)

about rtlsdr.dll i remove it for GPL licence problem, like sdrsharp you must download it by your self from net, and put in same folder of OpenEar.exe That doesn't get you off the hook, your program still links to it; whether you distribute the actual library binary or not doesn't make a difference.
by Stromeko
Sat Mar 28, 2020 12:28 pm
Forum: RTL-SDR Discussion
Topic: RTL-SDR for airplane tracking
Replies: 4
Views: 3459

Re: RTL-SDR for airplane tracking

I am new to this too. I have installed SDR# on a windows 10 machine and built a small antenna called a "quarter wave monopole ground plane" build to this design: https://ketil.com/la2dna/antenner/PMR446_ground_plane_antenna.htm . You do realize that this antenna is for an entirely different frequen...
by Stromeko
Tue Mar 17, 2020 5:57 am
Forum: KerberosSDR
Topic: 4x dump1090 on KerberosSDR
Replies: 6
Views: 9683

Re: 4x dump1090 on KerberosSDR

Note to self: I've likely fallen prey to the default dithering here… I need to find an IQ recorder that allows me to switch off dithering or compile my own rtl_sdr with that option patched in. Done that and it looks much better as long as I only look at the magnitude of the four signals (or alterna...
by Stromeko
Sun Mar 15, 2020 8:34 pm
Forum: KerberosSDR
Topic: 4x dump1090 on KerberosSDR
Replies: 6
Views: 9683

Re: 4x dump1090 on KerberosSDR

Looking at certain points in the data it seems that the magnitude signal on the four channels shifts around one or two samples depending on which message I look at. I have not yet tried to combine the data in magnitude space and the synthesize it back to IQ for dump1090, that might actually work be...
by Stromeko
Sat Mar 14, 2020 12:11 pm
Forum: KerberosSDR
Topic: 4x dump1090 on KerberosSDR
Replies: 6
Views: 9683

Re: 4x dump1090 on KerberosSDR

I can now play around with the IQ files a bit before coding it up as an RT program. So I ran out of memory a few times while doing that… :lol: I can correlate the four data records to a stable alignment that looks correct when checking various signals. Remember that I work off a 1:4 passive splitte...
by Stromeko
Sat Mar 14, 2020 11:59 am
Forum: KerberosSDR
Topic: 4x dump1090 on KerberosSDR
Replies: 6
Views: 9683

Re: 4x dump1090 on KerberosSDR

hjj9777 wrote:
Sat Mar 07, 2020 4:35 am
Curious to know your thoughts on combining dump1090 data with passive radar capability of the KerberosSDR […] Any thoughts?
In a sense that is what MLAT already does, so I'm not sure what I'd gain (except more data to increase the confidence level or precision).