Архив за 29.10.2017

RTL-SDR Discussion • Re: SDR without Sound card? Multiple channels in parallel?

Virutal Audio Cable?

Statistics: Posted by Username — Sun Oct 29, 2017 7:32 pm


Troubleshooting Help • Re: RTL-SDR Dongle V3 knocking out Wireless Networks

Do you try some different one?

Statistics: Posted by Username — Sun Oct 29, 2017 7:22 pm


Метеор, вечерний пролет, прием на донгл. И сам свисток , решил временно, для…






Метеор, вечерний пролет, прием на донгл. И сам свисток , решил временно, для лучшего теплоотвода использовать транзистор смазанный термопастой, и закрепленный резинкой.

От редакции: 😄

A little help with interference :(

Hello everyone! So I have a few questions for the community: I have had an intermittent issue with interference. It used to be every now and again, but now it's almost constant. Beginning to drive me nuts, as it renders any NOAA passes into garbage. https://imgur.com/TcZR4Ap
in the image you can see how the noise floor fluctuates up and down, as well as a constant "buzz" in the background, despite the fluctuations. tried putting my FM block filter in line, really did not help much. Actually, it seemed to degrade my signal quite a bit. I've got multiple dongles, so while one was on a station (Fm radio, 137Mhz band, they're all affected) I used the other dongle, and my HAMitUP converter to cruise the bands and see if maybe one of the local HAM guys were broadcasting. No luck finding it, but both radios are picking up the jumpy noise floor. One is on my 137 Mhz tuned QFH, the other is on just a plain long wire that spans my backyard. Have any of you seen anything like this? Any tips are appreciated, I'm getting a bit crabby at having passes walked on by these mystery fluctuations.

For some positive content https://imgur.com/EmxY1TR this is my QFH on the roof. I find it's better than my double crossed dipole. https://imgur.com/Fu7X0we No LNA yet, just the antenna and wire to my SDR gets decent results. https://imgur.com/PvueCwg good signal strength on NOAA, except when the noise floor starts jumping.

One final thing, has anyone seen this before? https://imgur.com/CBv41PB It showed up while i was recording a pass. Not really sure what to make of it. Sorry about image quality. My phone isn't the best picture taker on a good day. PC screens don't focus worth a darn.

Also, for a baseline. I live in a small town, with one FM station, and one AM station.

submitted by /u/SergeTheMunger
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Anyone know where i can get since…

Anyone know where i can get since they are out of stock or maybe someone has a extra to part with RTL-SDR Blog Multipurpose Dipole Antenna Kit

(RSS generated with FetchRss)

Подтвердите или опровергните пожалуйста, вопрос вот в чём, у меня сложилось…

Подтвердите или опровергните пожалуйста, вопрос вот в чём, у меня сложилось мнение что на декодирование DRM сигнала уходит гораздо больше ресурсов компа чем на декодирование APCO 25,имею планшет с Win 10,rtl-sdr v3., так вот DSD без проблем декодирует Apco 25 на обычную резинку вкрученую в свисток(антенна от сканера Uniden 346),а вот с DRM беда какая-то, причём сигнал уверенный, лишь иногда удаётся услышать речь, в основном типичный DRM звук как если слушать на аналоге. Пробовал разные настройки, apco 25 без проблем в здании на резинку, а DRM ни фига (((, еслибы сигнал был зашифрованный то вообще никогда бы речь не удалось услышать, но она редко но проскальзывает в эфире, грешу только на планшет, но не сказать что совсем слабый,планшет на Atom z3735f с 2гб оперативки, или всё таки слаб для DRM декодирования?

rolling codes

Is there a way you can tell if a signal you picked up from a RKE system using your RTL-SDR on gqrx, if it is a rolling code? just by copying the wave file one time. I read something about keeloq has an extra 2 bits for rolling codes but i am sure the information is not accurate. but anyway something like that.

submitted by /u/stevejacobsteve
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Какой sdr приемник посоветуете для перехвата gsm трафика ( главное, чтобы проблем с дравами не было и можно было легко найти в Москве ) ?…

Какой sdr приемник посоветуете для перехвата gsm трафика ( главное, чтобы проблем с дравами не было и можно было легко найти в Москве ) ?

Off-Topic • Re: serial over RF monitor

You need an SDR and SDR#. The main problem is a Software who allow you to decode the Data.
Do you know all parameter of the data?

Statistics: Posted by Username — Sun Oct 29, 2017 12:26 pm


Off-Topic • Re: Pinnacle Miro PCTV

The problem is the normal TV Hardware have some Hardware Filter and other stuff who not work.

Statistics: Posted by Username — Sun Oct 29, 2017 12:25 pm


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