Архив за 05.12.2017

Comment on SDRplay Release the RSP1A: A $99 14-bit 1 kHz to 2 GHz Revision of the RSP1 by Tech Guy

Is there a way to combine two RSP1A to handle strong signals without overloading?

Troubleshooting Help • Re: Using upconverter with Raspberry 3 command line

I don't think there is the ability to set an upconverter offset with a flag.

You just need to tune directly to the unconverted frequency and do the maths in your head.

E.g. to tune to 6 MHz, with the upconverter you just need to tune the RTL-SDR to 125 MHz + 6 MHz = 131 MHz.

Statistics: Posted by rtlsdrblog — Tue Dec 05, 2017 11:04 pm


Troubleshooting Help • Using upconverter with Raspberry 3 command line

Hi,

I have a new Raspberry Pi 3, Realtek SDR dongle and NOELEC Ham It Up 1.3 upconverter.

I'd really like to receive USB on the command line. I'm making good progress with rtl_fm and sox but can't figure out how to include the upconverter 125Mhz offset.

Does anyone know how to achieve this with rtl_fm or have another command line alternative?

Ta,

Chris

Statistics: Posted by chrispercol — Tue Dec 05, 2017 9:59 pm


А кто нибудь уже приобрел этот китайский клон V3 — ? Каковы отзывы?…

Премиум USB Dongle R820T2 RTL2832U RTL SDR w/1PPM TCXO ТВ тюнер Палка приемник купить на AliExpress
А кто нибудь уже приобрел этот китайский клон V3 - https://ru.aliexpress.com/item/USB-Dongle-R820T2-RTL2832U-RTL-SDR-w-1PPM-TCXO/32841286920.html?spm=a2g0v.search0104.3.179.VFvhsN&ws_ab_test=searchweb0_0%2Csearchweb201602_3_10152_5000015_10151_10065_10344_10068_10345_10342_10343_10340_10341_10543_5130015_10541_10084_10083_10307_10301_5690015_10539_5080015_10312_10059_10313_10314_10534_100031_10604_10603_10103_10605_5060015_10596_10142_10107%2Csearchweb201603_25%2CppcSwitch_5&algo_expid=42606cdb-3510-4c6c-bac9-c793323c9863-24&algo_pvid=42606cdb-3510-4c6c-bac9-c793323c9863&rmStoreLevelAB=2 ?
Каковы отзывы?

Коллеги, делитесь кто какие антенны для SDR радиосканера использует на КВ и…

Коллеги, делитесь кто какие антенны для SDR радиосканера использует на КВ и УКВ. Больше интересуют антенны на КВ - как устанавливали (натягивали)?

RSP1A SDR receiver and SDRuno software — CQ World WIde DX Contest (CW) 2017 [00:05:45]

CQ World Wide DX Contest (CW) receiving in Macedonia with SDRplay RSP1A SDR-receiver and SDRuno software on 80m-Band with full-size half-wave resonant dipole antenna.
Contest conditions are always big challenge to any receiver dynamics. Here you can see only 60 kHz wide frequency spectrum fulfilled with many competitor stations "fighting each other". In addition, there are local radio-station (only 1 km from my place) with huge signal...

Extend signal question

I'm having trouble finding the right equipment to use for placing my antenna about 100ft away from the computer

submitted by /u/thirteensigmapi
[link] [comments]

RTL-SDR Discussion • Re: Before / After comparison?

This might work for you:

https://github.com/xmikos/qspectrumanalyzer

-K

Statistics: Posted by Kenn — Tue Dec 05, 2017 4:14 pm


Comment on TempestSDR: An SDR tool for Eavesdropping on Computer Screens via Unintentionally Radiated RF by GiamMa-based researchers SDR R&D IoT

During my windows tests I encountered various errors and exceptions such as “Exception in thread” AWT-EventQueue-0 “java.lang.UnsatisfiedLinkError:”.

The solution that worked for me was to follow the following tutorial, How to settings MinGW / MinGW C++ Download and Installation:

http://www.ics.uci.edu/~pattis/common/handouts/mingweclipse/mingw.html

The version of java to be used must be higher than release 52, with version 8 I have not encountered problems on windows 32 and 64 bit.

My test of Eavesdropping on DELL Laptop Computer Screens via electromagnetic interference (EMI) using rtl sdr on Windows. Monitor Resolution WXGA 1280×800 60hz:

https://www.youtube.com/watch?v=OK70F4RsLjw

To look for the frequency of interference signal, I recommend searching by scanning one waveform with many subsequent peaks between 300 and 700 Mhz.

After tuning in to the targhet frequency let the software take autocalibriums and try to move a few Mhz to center the target.

RTL-SDR Discussion • Re: Before / After comparison?

Yes look up rtl_power. Basically you can do an integration over a set time period, save the results and plot it, then make your changes and run rtl_power again.

Statistics: Posted by rtlsdrblog — Tue Dec 05, 2017 10:37 am


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