Архив за 22.08.2017

Кто нибудь покупал в этой группе ?…

Кто нибудь покупал в этой группе ?

RTL-SDR Discussion • Bought a rtl-sdr.com AM TRAP but want to listen to <1.705Mhz

Hi, I bought both fm/am broadcast bandstop filters on july 30th and they arrived to spain on august 17th, so I will be receiving them the next week or maybe this week(hopefully!). The thing is I just read (silly me) that this filter blocks everything from 0khz to 1.705Mhz so If I put the am filter I won't be able to receive for example 518khz or 490khz in which there are navtex transmissions (that I actually can't receive because I have so many interferences from the AM broadcast band anyway) or for example a local navigation beacon that is on 395khz. I need this filter and I won't be returning it or anything like that (it was my fault for not reading carefully before buying it, but anyway it's going to be an enormus help reducing the interferences)

I'm kind of new in this stuff and I don't know exactly what I need. At the moment I don't care about not being able to listen to frequencies below 1.705Mhz because like I said I don't receive them because of the interferences at the moment but anyway, in a near future I want to be able to listen to those frequencies, so what should I buy for this purpose?

Thanks

Statistics: Posted by radiomaniac — Tue Aug 22, 2017 7:28 pm


Comment on Some Further Tests with the ADALM-PLUTO SDR by R vd Meer

I have just made a test with the pluto and adam patchantenna for the l band.
The program is sdr# ,with only 20db i could see the aero signals and some data signals
The iridiumband was not clear due to rfi in the neigbourhood wich gives a sawtooth signal over the iridiumband

Frequency scanner/monitoring

I've found a frequency range where a number of frequencies are in use (possibly frequency hopping). On a physical scanner you can set a range and it will scan it looking for chat. Is something like this available? (I'm on Linux)

submitted by /u/b1twise
[link] [comments]

Comment on Some Further Tests with the ADALM-PLUTO SDR by David

It would be good to see comparison on l-band. In case of r820t2 sensitivity drop after +/- 1 Ghz, I think, the PlutoSDR must win Airspy.

Comment on Some Further Tests with the ADALM-PLUTO SDR by Tobias Mädel

The trick is starting both at the same time, itself.
You could try changing the Bandwidth manually, change some of the Filter settings, and many presumably many more…

Comment on Some Further Tests with the ADALM-PLUTO SDR by R vd Meer

If you would what is that trick
i fiddled with the AD IIO Oscilloscope and there are a lot of settings around ,bandwith and lna and much more

Ну только частично. Перекрывает наземный телекоммуникационный диапазон в основном.

AOR пишет:
Ну только частично. Перекрывает наземный телекоммуникационный диапазон в основном.
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Широкополосный приёмник из DVB донгла - Страница #518

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AOR Ну может он для спутниковой связи подойдет в самый раз.

marvel пишет:
AOR Ну может он для спутниковой связи подойдет в самый раз.
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Широкополосный приёмник из DVB донгла - Страница #518

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Зачем он нужен от 325 МГц?

AOR пишет:
Зачем он нужен от 325 МГц?
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Широкополосный приёмник из DVB донгла - Страница #518

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