Search found 2058 matches

by rtlsdrblog
Wed Apr 17, 2019 2:20 am
Forum: KerberosSDR
Topic: Sources for antennas?
Replies: 16
Views: 990

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: 186

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: 107

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: 246

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: 97

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: 187

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.
by rtlsdrblog
Sun Apr 14, 2019 11:02 pm
Forum: Antennas
Topic: Another Double Cross Antenna build (went wrong)
Replies: 12
Views: 665

Re: Another Double Cross Antenna build (went wrong)

So the LNA i bought is not made by Nooelec, it's by a british company called Uputronics. They work together with Airspy i think. The LNA is placed directly at the antenna, only about two feet of coax away. Ah okay, I know about the Uputronics LNA. This one has the LNA before the SAW filter (so the ...
by rtlsdrblog
Sun Apr 14, 2019 8:48 am
Forum: Antennas
Topic: Another Double Cross Antenna build (went wrong)
Replies: 12
Views: 665

Re: Another Double Cross Antenna build (went wrong)

Sorry it's just not easy to troubleshoot antenna issues. How does the signal look like when you're receiving it? Also what exactly is the Nooelec LNA that you have? AFAIK they haven't actually released a 137 MHz LNA yet. Are you sure that the LNA you have is for 137 MHz? Got a link to the one you ha...
by rtlsdrblog
Sun Apr 14, 2019 8:42 am
Forum: Troubleshooting Help
Topic: Do you need an upconverter for Sw listening?
Replies: 2
Views: 126

Re: Do you need an upconverter for Sw listening?

With a our RTL-SDR Blog V3, you don't need an upconverter as you can use direct sampling mode. But an upconverter could get you better RX performance especially if you have strong interfering signals.
by rtlsdrblog
Sat Apr 13, 2019 5:37 am
Forum: KerberosSDR
Topic: Offline Contact Request with KSDR Management
Replies: 1
Views: 158

Re: Offline Contact Request with KSDR Management

You'll need to contact us by email first, [email protected] and [email protected].