Search found 2876 matches

by rtlsdrblog
Wed Apr 21, 2021 10:42 am
Forum: RTL-SDR Discussion
Topic: My RTL-SDR + homemade QFH antenna = fairly rubbish NOAA images :(
Replies: 1
Views: 96

Re: My RTL-SDR + homemade QFH antenna = fairly rubbish NOAA images :(

Got a screenshot of what your spectrum looks like during a pass? You need to use NFM or WFM mode (WFM mode usually works better), and definitely not AM mode. The filter size should be just large enough to cover the signal, at least 34 kHz. So - the issues. When using RPi 4 with either of the dongles...
by rtlsdrblog
Tue Apr 20, 2021 2:44 am
Forum: Troubleshooting Help
Topic: I can receive only FM stations
Replies: 5
Views: 655

Re: I can receive only FM stations

V3 Pro
This is a cloned unit, so I can't offer any support if it's a hardware issue. But even if it's working fine, you do need a properly sized HF antenna for it to work.
by rtlsdrblog
Tue Apr 20, 2021 2:43 am
Forum: RTL-SDR Discussion
Topic: Windows 10 x64 and RTL stick.
Replies: 1
Views: 124

Re: Windows 10 x64 and RTL stick.

It shows two bulk in devices normally. Zero is the SDR/radio itself, One is the InfraRed endpoint which is not used for SDR. You don't need to do anything.
by rtlsdrblog
Tue Apr 20, 2021 2:40 am
Forum: RTL-SDR Discussion
Topic: Minimum amount of antennas
Replies: 2
Views: 169

Re: Minimum amount of antennas

Are you maybe referring to KerberosSDR? Please ask in the appropriate forum if you are.
by rtlsdrblog
Sun Apr 18, 2021 4:02 am
Forum: KerberosSDR
Topic: Spotty Accuracy When Tracking Transmitter
Replies: 12
Views: 952

Re: Spotty Accuracy When Tracking Transmitter

With dec and FIR filtering off, you should check the spectrum and see a single nice peak (assuming there are no other signals being received). If it's overloading from too much gain/signal, then you'll probably see multiple peaks with weird shapes. Also one more thing I forgot to mention, don't forg...
by rtlsdrblog
Fri Apr 16, 2021 3:25 am
Forum: KerberosSDR
Topic: No WiFi
Replies: 3
Views: 219

Re: No WiFi

Are you trying to connect to the hotspot generated by the Pi, or have it connect to a hotspot generated by your phone?
by rtlsdrblog
Fri Apr 16, 2021 3:23 am
Forum: KerberosSDR
Topic: Automatic calibration KerberosSDR
Replies: 1
Views: 159

Re: Automatic calibration KerberosSDR

Very nice! Have you managed to confirm DFing after adding those switches? No phase distortion?
by rtlsdrblog
Fri Apr 16, 2021 3:17 am
Forum: KerberosSDR
Topic: Spotty Accuracy When Tracking Transmitter
Replies: 12
Views: 952

Re: Spotty Accuracy When Tracking Transmitter

First point is that the antennas you are using are way too small for 121 MHz. Coherent DFing can withstand quite a bit of tolerance in antenna element sizing, but you're currently using an 800 MHz antenna for 121 MHz, which is quite major. If you have them, use the long whips that came with the set ...
by rtlsdrblog
Wed Apr 14, 2021 11:43 am
Forum: Other SDR Devices
Topic: Need software for HackRF One radio device to run Linux successfully.
Replies: 1
Views: 563

Re: Need software for HackRF One radio device to run Linux successfully.

The software really depends what you want to use it for? The HackRF is mostly for hacking and experimenting, so GNU Radio.

Other than that, GQRX.
by rtlsdrblog
Wed Apr 14, 2021 11:40 am
Forum: Antennas
Topic: Motorhome antennas, HF and higher?
Replies: 2
Views: 279

Re: Motorhome antennas, HF and higher?

The loop will most likely work the best. A cheap Chinese loop is fine, but as you're in the UK look up Welbrook loops too. Obviously much higher cost, but really well built.