And most of the people making the dongles are integrating commercial chips and a few other cheap parts. You highly underestimate the interest in SDR methinks, a few hundreds? And I doubt they expect to only sell 1. PS: Reported rapid tuning issue may still exist only happens for me if sample rates are not set correctly in a flowgraph , so take the tuning easy until a good fix is found :. Hi Balint, Superb demo, very interesting project you got there.
Just started reading about FunCube, however after browsing around there are cheaper options. Thanks again for the introduction. Keep it up mate. But these bands are going to be taken up by other radio services…. A lot of people seem to be assuming anything that can receive TV can be converted into an SDR, as if TV reception was the magic key enabling this. The key was actually the Realtek demodulator chip having a special SDR mode.
And look at new devices being released, because old devices:. Yes malvineous, you are right! I did a bit-o-research on those cards. There is a distinct difference between software controlled vs software defined.
Be advised when trying to order compatible devices from overseas sources: some of them are not permitted in the US and so cannot be shipped. How Do I Do This? How about the direct video input on a Hauppauge card to receive digitize baseband to 4 or 4. I am not talking about the USB type. Which attaches to the setup box used box in which the disc antenna wire goes there in that box as well. So should I install GNU or what software will I need and what about the antenna etc my email address is chetna gmail.
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Learn more. Report comment. If someone knows a source for one of these tuners in Canada or the USA please post it up :. Normal DVB-T tuners decode on the chip and dump pure mpeg stream. That sounds like a really interesting project — so much to discover using SDR! Does this work? Can you decode PSK31 for example with this? Why, do you have any ideas? It would be very nice to have specs on DTV dongles with hardware decoding.
Hi all, Thank you to all of you who have tested the code so far and provided feedback! Thanks Balint; Turns out everything has to be in the same directory. Can anything be done with that? Is there any other software doing jobs like WebSDR? If you come up with a novel use for one of these dongles, send it in on the tip line. Being an air traffic controller is a very cool career path — you get to see planes flying around on computer screens and orchestrate their flight paths like a modern-day magician.
Right now, Aviation Mapper only displays planes within km of Sydney airspace, but [Balint] is working on expanding the coverage with the help of other plane spotters.
At the time, these capture cards could only write data directly to a file. With his source block, [Balint] can listen to anything on the radio between MHz. The sample depth is 8 bits and the sample rate can be anything up to 3. With a simple digital TV USB capture card, you can build your own software defined radio or spectrum analyzer.
Turning these cheap capture cards into software defined radios and spectrum analyzers was discovered by [Antti Palosaari] after sniffing the device. Make sure the USB port is actually on a high-speed hub. Try different ports, if necessary add a PCIe card below.
Some SDR drivers work better with specific controllers. Connect high speed and non-high speed devices to the same USB hub. In the Windows power settings ensure USB selective suspend is disabled. The USB selective suspend feature allows the hub driver to suspend an individual port without affecting the operation of the other ports on the hub. If you decide to use an external hub make sure: It is powered, and Can deliver full specification for each port.
Buy a card with multiple controllers, ideally one controller per channel. A good example is the StarTech.
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