Search found 78 matches

by bglod
Mon Jan 15, 2018 4:22 pm
Forum: Hardware and RF
Topic: Communication between the two bladeRF boards
Replies: 1
Views: 107

Re: Communication between the two bladeRF boards

Do you have a delay between starting the receiving radio and starting the transmitting radio? To answer your other question, yes, you can do this with the bladeRF-cli. A rough guideline is: Set RX & TX freqs/bandwidth/samplerates/gains cal lms; cal dc rx; cal dc tx rx config <params> (type "help rx"...
by bglod
Mon Jan 15, 2018 2:15 pm
Forum: Hardware and RF
Topic: Replicate PCB design
Replies: 1
Views: 81

Re: Replicate PCB design

We cannot publish or provide anyone that information, sorry. However, I highly recommend the books: "High-Speed Digital Design" by Howard Johnson, and "Signal [and Power] Integrity: Simplified" by Eric Bogatin. If you're just starting out, you'll want to have a basic understanding of the fundamental...
by bglod
Mon Jan 15, 2018 1:42 pm
Forum: Hardware and RF
Topic: Antenna to increase the distance
Replies: 5
Views: 1727

Re: Antenna to increase the distance

I cannot give one particular recommendation because it depends on your use case. However, I can recommend that you check out Mini-Circuits. They have many connectorized amplifiers to choose from. I'm sure you can find similar products from other manufacturers on Mouser, Digi-Key, etc.
by bglod
Wed Jan 03, 2018 11:00 am
Forum: Tutorials and Examples
Topic: gsm interceptor on windows
Replies: 5
Views: 15296

Re: gsm interceptor on windows

We cannot tell you how to do that. It is a legal issue, as well as an ethical one.

Locking this topic.
by bglod
Wed Jan 03, 2018 10:48 am
Forum: Troubleshooting
Topic: Using bladeRF with Beaglebone Black
Replies: 5
Views: 158

Re: Using bladeRF with Beaglebone Black

Like RadioGuy said, these SBC-type devices tend to lack the processing power, driver/software compatibility, or just have crummy USB controllers / power supplies. Can you clarify your setup? It sounds like the bladeRF is connected to the BeagleBone via USB, and the BeagleBone is connected to a linux...
by bglod
Wed Jan 03, 2018 9:54 am
Forum: Troubleshooting
Topic: Error Loading FPGA with Quartus GUI Built bitstream
Replies: 1
Views: 98

Re: Error Loading FPGA with Quartus GUI Built bitstream

This is something I've also come across and was unable to figure out why this happens. Granted, I didn't spend much time trying to figure it out. The best I can tell you at this time is to use the "Convert Programming Files..." tool in the "File" menu to convert the .sof to a .rbf. The command-line ...
by bglod
Wed Jan 03, 2018 9:39 am
Forum: General
Topic: BladeRF Calibration
Replies: 1
Views: 176

Re: BladeRF Calibration

I wouldn't use kalibrate, it's really bad and doesn't work as advertised. Ideally, you'd grab a super accurate frequency counter and tune the VCTCXO against that (this is what we do in the factory). Another option that might be easier/cheaper is to use a 10 MHz reference if you have one, or purchase...
by bglod
Tue Jan 02, 2018 5:58 pm
Forum: Hardware and RF
Topic: Control the XB_GPIO-100 board
Replies: 2
Views: 187

Re: Control the XB_GPIO-100 board

nios_gpio is a general-purpose I/O controlled by a PIO core connected to the Nios soft processor. This PIO bus controls system configuration stuff like resets, RF switches, etc. Bits 31:30 control the mode of the expansion header. These bits are set automatically when you use the bladeRF-cli (or li...
by bglod
Wed Dec 13, 2017 1:05 pm
Forum: Hardware and RF
Topic: Overrun when doing sync meta transfers TX and RX
Replies: 12
Views: 951

Re: Overrun when doing sync meta transfers TX and RX

I gotcha. It would help if I checked IRC, huh? :oops:
by bglod
Wed Dec 13, 2017 11:07 am
Forum: Troubleshooting
Topic: bladeRF x115 - Mac OS 10.11 - gnuradio companion 3.7.11
Replies: 1
Views: 194

Re: bladeRF x115 - Mac OS 10.11 - gnuradio companion 3.7.11

I don't see the screenshot. If it's at the center frequency, it might be the (normal) DC offset. You should be able to plop down a DC filter in GNU Radio if that is the case. After tuning to the frequency of interest, you can also try to run the commands (or GNU Radio equivalent) "cal lms; cal dc rx...