Архив за 06.09.2018

Comment on SegDSP: Distributed Cloud Based SDR with SpyServer by Lucas Teske

Yeah you can receive spyserver in browser, and / or record it to a disk or remote computer. The idea is to be able to use several spyservers with serveral workers and record various channels at the same time. Maybe in the future a better WebSDR or similar interface.

How to Receive Beautiful Images of the Earth Directly From Space | GOES-15,16,17 and Himawari 8 HRIT

How to Receive Beautiful Images of the Earth Directly From Space | GOES-15,16,17 and Himawari 8 HRIT submitted by /u/TTEchironex
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Comment on re-DECTed: An RTL-SDR DECT Decoder by Dave

DECT is specified for the whole frequency range 1880 –1939 MHz.
For the frequency band 1880 – 1900 MHz 10 RF-carriers with centre frequencies Fc are given by:
Fc = F0 – c * 1,728 MHz, where:F0 = 1897,344 MHz
c = 0, 1, 2, ….., 9
For carriers from 1899,072 to 1937,088 MHz the carrier frequencies are defined by:
Fc = F9 + c * 1,728 MHz, where:F9 = 1881,792 MHz
c = 10, 11, 12, ….., 32

In the grc flowgraph, in the variable id, freq, you want to change the value to 1881.792e6+(channel*1.728e6) . You don’t need to have a complete frequency listing if you just have this formula I just gave you! The radio buttons will control the channel variable! lol! for example 1881.792e6+(23*1.728e6) = 1921.536Mhz, which is channel 23 !!! So, the GUI Chooser changes the channel variable.
Then, in WX GUI Chooser, you want to append the last 22 channel numbers. Like this, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 ,17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32]

I’m really not playing with a full deck today, guys. I’m about to relapse and buy a pack of cigs right now. But, first I had to type all this out because I feel your aggravation since not everyone knows how to come to the conclusion I came to. I hope you all have fun with it and not do anything dumb, like telling people that you can listen to their phone conversation, etc. That can get you put in jail very fast. So, with that said, with *everything* in life, just keep it to yourself! Don’t even let people know when you took a piss!

Comment on Locating a Radio Transmitter with Direction Finding Techniques and KerberosSDR our 4-Tuner Coherent RTL-SDR by snn47

Have you thought abought using a doppler antenna basis for direction finding?
Compared to comercial doppler antenna basis used e.g. ATC (e.g. R&S®ADD050) fewer antennas work too as PA3BDNX proposed e.g. https://a43.veron.nl/projecten/doppler-peiler-pseudo-doppler-radio-direction-finder-rdf/, another HAM (sorry can’t remember call sign or where I read this) built his DF doppler antenna basis with an umbrella.

Comment on Grid-2-Audio: Analyzing the Mains Electrical Grid Waveform with a PC Soundcard by snn47

or when available a digital oscilloscope like TEKTRONIX TDS3034C (can be used record IQ Files, however pricetag is about 30k$)?

My question is what is the intention of this project, since the frequencies and bandwidth of interest differ with source.
WHich sources are of interest, load generated interference on the 50hz/60Hz AC can come from within your own, (adjacent) home(s)/appartment(s), or from sources much farther away (generators, converter, lightning …).

While legacy generators motors would be short sparks, switching circuit adds depending on design more or less strong RFI on AC e.g. LED-Lamps, Powersupplies, or originate from data communication like Power Line.

Comment on Quick Start Guide by Peter Lefferson

I worked my way to clicking zadig many times and always get:

c\sdrsharp-x86\sadig.exe
The file or directory is corrupted and unreadable.

Would you suggest something. Spending too many hours.

Comment on New Products in Our Store: Wideband LNA + Spare V3 Metal Enclosures by Max

Something like the Japanese BCL-LOOP13 but at the rtl-sdr blog’s price 🙂

Нужна помощь в определении входа и выхода у такого аттенюатора. До этого не…


Нужна помощь в определении входа и выхода у такого аттенюатора. До этого не имел дела с ними, а китайские продавцы не могут внятно ответить. Маркировки нет, предполагаю, что может быть двунаправленным, но в описании ни у одного продавца это не указано.

Cheap shortwave RTL-SDR

Hi to all, I have a set of RTL-SDR USB devices to listen a different set of frequencies. I would like to listen also shortwave broadcasting. I saw some USB keys that have a bandwidth covering shortwaves as well. This is an example.

What do you think about them? Are they worth the price or it's better to buy an upcoverter?

submitted by /u/lormayna
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Насколько я сравнивал по чувствительности свой свисток со своим ICOM PCR-1000, по слабым сигналам, таким, как Сатком, в …

killer258 пишет:
Насколько я сравнивал по чувствительности свой свисток со своим ICOM PCR-1000, по слабым сигналам, таким, как Сатком, в целом примерно одинаково принимают, где-то свисток лучше, где-то PCR-1000, н...
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Широкополосный приёмник из DVB донгла - Страница #552

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