Search found 2872 matches

by rtlsdrblog
Sun Apr 18, 2021 4:02 am
Forum: KerberosSDR
Topic: Spotty Accuracy When Tracking Transmitter
Replies: 11
Views: 817

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: 182

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: 140

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: 11
Views: 817

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: 539

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: 1
Views: 258

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.
by rtlsdrblog
Wed Apr 14, 2021 11:33 am
Forum: Signal Identification Help
Topic: Multimode decoders
Replies: 1
Views: 397

Re: Multimode decoders

Nothing like that available for everyday man prices sadly. There are a few machine learning attempts on GitHub, but nothing really ready for actual usage that i've seen yet.
by rtlsdrblog
Wed Apr 14, 2021 11:30 am
Forum: KerberosSDR
Topic: RF Switch Boards for KSDR
Replies: 4
Views: 1095

Re: RF Switch Boards for KSDR

fresnoboy wrote:
Sat Apr 03, 2021 5:07 pm
Any idea yet when the v2 hardware will ship? I am going to do an antenna upgrade in the next few months and was hoping to mount one at the same time.
It will still be a few months out unfortunately. Crowd supply page here: https://www.crowdsupply.com/krakenrf/krakensdr
by rtlsdrblog
Wed Apr 14, 2021 11:27 am
Forum: KerberosSDR
Topic: Passive Radar Experimentation: Help Requested
Replies: 5
Views: 608

Re: Passive Radar Experimentation: Help Requested

For bandwidth just use the largest available 2.56 MSPS. Yes screenshots are very helpful to see what you're getting. If you like a map showing the geometry of your setup could help too. And do you have two TV Yagis in your setup now? Make sure that the cables are the same length and low loss. You mi...
by rtlsdrblog
Wed Apr 14, 2021 11:16 am
Forum: KerberosSDR
Topic: Outdoor tower (tree) antenna mounting questions for Kraken and Kerberos SDR
Replies: 3
Views: 335

Re: Outdoor tower (tree) antenna mounting questions for Kraken and Kerberos SDR

KrakenSDR won't be designed for outdoor use, but you could enclosure it in your own waterproof box (probably needs a fan though). Kraken will draw about 1.5A, more if you're using the bias tees. I'm not sure how it will operate with such a long USB cable though, even if it's fibre. I'd guess that an...