Search found 2052 matches

by rtlsdrblog
Wed Apr 17, 2019 11:38 pm
Forum: KerberosSDR
Topic: Pi image issues...
Replies: 2
Views: 133

Re: Pi image issues...

All the images are shrunk down to 7G, so they should fit on all 8GB cards, unless yours is really bad?

Are you able to connect to the KerberosPi WiFi?
by rtlsdrblog
Wed Apr 17, 2019 11:36 pm
Forum: KerberosSDR
Topic: Share your results
Replies: 14
Views: 730

Re: Share your results

After several hours of fine tuning, I'm able to get a nice bearing on the ULA (linear array) but, could not get the UCA (Circular array) to get a nice bearing. Anyone else having the same issue? Are we sure the drawing and info on the UCA is good? Antenna radius = λ*s or should it read Antenna spac...
by rtlsdrblog
Wed Apr 17, 2019 2:30 am
Forum: RTL-SDR Discussion
Topic: keyboard shortcut to change frequency
Replies: 5
Views: 8035

Re: keyboard shortcut to change frequency

I was led here for the same reason... I realize this isn't the SDR# forum but seriously, there is no way to simply enter the frequency you want with the keyboard, the way you can with SDR-Radio? You have to use this arcane mouse method? That alone eliminates an otherwise excellent program for me. A...
by rtlsdrblog
Wed Apr 17, 2019 2:27 am
Forum: RTL-SDR Discussion
Topic: Use demodulated signals with electronics, off-pc
Replies: 5
Views: 240

Re: Use demodulated signals with electronics, off-pc

I mean connecting the received baseband signal to an external microprocessor, like PIC, AVR or even FPGA's. So that you could use a received bit-stream to control robotics, light systems, domotica, etc. Does that clear things for you? The simplest way would be run the SDR on a Pi 3, and demodulate ...
by rtlsdrblog
Wed Apr 17, 2019 2:20 am
Forum: KerberosSDR
Topic: Sources for antennas?
Replies: 16
Views: 964

Re: Sources for antennas?

Remember that if you're using it for DOA you'll need to have the antennas arranged in a certain pattern with certain spacing.

Using a whip antenna won't hurt the unit though. Although as you've already seen, WiFi antennas typically use RP-SMA connectors which won't work here.
by rtlsdrblog
Wed Apr 17, 2019 2:18 am
Forum: KerberosSDR
Topic: Clock oscillator on KerberosSDR?
Replies: 2
Views: 177

Re: Clock oscillator on KerberosSDR?

We don't have a schematic sorry the hardware isn't open source.

The TCXO is 1PPM or better, so that should be good enough for GPS decoding. Same TCXO as used in the V3.
by rtlsdrblog
Tue Apr 16, 2019 9:55 am
Forum: Troubleshooting Help
Topic: UniTrunker Only Sees One Dongle
Replies: 1
Views: 106

Re: UniTrunker Only Sees One Dongle

Make sure that you've closed all other programs that are accessing the dongle, otherwise those programs will block Unitrunker from being able to access it.
by rtlsdrblog
Tue Apr 16, 2019 9:51 am
Forum: RTL-SDR Discussion
Topic: Use demodulated signals with electronics, off-pc
Replies: 5
Views: 240

Re: Use demodulated signals with electronics, off-pc

What do you mean by connecting it to electronics?

If you have a TX capable SDR you can simply restransmit the signal being received, but I don't understand what the point of that would be, unless you're doing some DSP to the signal in software first.
by rtlsdrblog
Tue Apr 16, 2019 9:49 am
Forum: RTL-SDR Discussion
Topic: Trouble Directly Polling
Replies: 1
Views: 93

Re: Trouble Directly Polling

By poll the signal, do you mean that you are actually trying to sample it with the ADC on the micro, and bypass the RTL2832U?
by rtlsdrblog
Mon Apr 15, 2019 11:51 am
Forum: KerberosSDR
Topic: command line sequence for enabling noise source etc.
Replies: 2
Views: 180

Re: command line sequence for enabling noise source etc.

I'm not sure exactly what it is you're doing, but at the moment if you're wanting to do coherent stuff you're going to need to be able to run the GUI.

If you just want to enable the bias tee, you can use the command line software rtl_biast for the V3, explained here www.rtl-sdr.com/V3.