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by rtlsdrblog
Fri Jun 12, 2020 3:03 am
Forum: KerberosSDR
Topic: Urgent -- Configuration Issues
Replies: 6
Views: 663

Re: Urgent -- Configuration Issues

It's more about the quality of the power supply than the total amperage. Some supplies say 3A, but in reality can't handle more than 1A.

DId you try troubleshooting with rtl_test? Can you run four instances of rtl_test at the same time?
by rtlsdrblog
Fri Jun 12, 2020 3:00 am
Forum: Troubleshooting Help
Topic: RTL - SDR STOP working, need help!
Replies: 5
Views: 559

Re: RTL - SDR STOP working, need help!

What type of RTL-SDR do you have?
by rtlsdrblog
Fri Jun 12, 2020 2:59 am
Forum: Troubleshooting Help
Topic: question about HDSDR
Replies: 2
Views: 215

Re: question about HDSDR

LO is the local oscillator frequency. It's what the tuner in the SDR is actually physically tuning to, and that will be the center of your spectrum display. You can then tune digitally within the SDRs bandwidth without needing to change the LO. Bandwidth and sample rate are intertwined. On the RTL-S...
by rtlsdrblog
Thu Jun 11, 2020 10:21 pm
Forum: Troubleshooting Help
Topic: New user - no Bulk-in interface
Replies: 1
Views: 234

Re: New user - no Bulk-in interface

Unfortunately probably a dud if it doesn't show up on anything. I'll reply to your email too and send a replacement.
by rtlsdrblog
Sun Jun 07, 2020 9:43 am
Forum: KerberosSDR
Topic: setup_init.sh errors
Replies: 4
Views: 487

Re: setup_init.sh errors

Those were just warnings, not errors. So the install completed successfully.

Edit run.sh and enable the logging. See if there are any runtime errors being generated when you try to click start processing.
by rtlsdrblog
Sun Jun 07, 2020 9:40 am
Forum: KerberosSDR
Topic: KerberosSDR Interface to Gnu Radio Companion (GRC)
Replies: 10
Views: 2668

Re: KerberosSDR Interface to Gnu Radio Companion (GRC)

Thats clear so far, but how do I control the noise source andetc via gnuradio? Is there even need for that or does kerberos sdr start of coherent right away? Kerberos is not coherent by itself, the sample and phase sync comes from the software. So in GNU Radio you'd have to build a flowchart to do ...
by rtlsdrblog
Sun Jun 07, 2020 9:37 am
Forum: KerberosSDR
Topic: 27mhz direction finding
Replies: 2
Views: 347

Re: 27mhz direction finding

Antenna spacing is going to be the major issue. When you start to go below ~50 MHz other methods tend to become more practical.

But if you're able to get decent spacing, and gather data from multiple locations, it should average out the innaccuracies from not having a full sized array.
by rtlsdrblog
Sun Jun 07, 2020 9:35 am
Forum: Troubleshooting Help
Topic: RTL - SDR STOP working, need help!
Replies: 5
Views: 559

Re: RTL - SDR STOP working, need help!

Did Zadig complete and actually install the WinUSB driver? What does it say on the left of the arrow in Zadig after installing?
by rtlsdrblog
Thu Jun 04, 2020 9:51 am
Forum: RTL-SDR Discussion
Topic: Bias T
Replies: 9
Views: 947

Re: Bias T

What software are you running with the dongle? Remember that the EEPROM settings will only be recognized if you are using the rtl-sdr-blog drivers together with your software. Instructions for using the rtl-sdr-blog drivers with SDR# are written in the github readme https://github.com/rtlsdrblog/rtl...
by rtlsdrblog
Thu Jun 04, 2020 9:48 am
Forum: KerberosSDR
Topic: ADS-B S Mode Multilateration
Replies: 1
Views: 1232

Re: ADS-B S Mode Multilateration

TDOA would require multiple units spread out over some distance and networked. KSDR doesn't use TDoA.

THe burst size of ADS-B packets is quite short so it's a challenge, but it could be possible to get a bearing with updated code.