Архив за 28.08.2017

хм странно, та что светлее ноаа 15 а темнее ноаа 18 разница 20 мин 51 гр выкса, хмм…



хм странно, та что светлее ноаа 15 а темнее ноаа 18 разница 20 мин 51 гр выкса, хмм интересно ноаа 15 светлее но менее контраснее но ноаа 18 темнее но контраснее , интересно , настройки wxtool одинаковые, принимал на airspy mini, антенна квадрофиляр высота примерно 3 метра стоит в огороде

Thanks for the add. I just ordered a V3, and trying to get the most out of it.

Thanks for the add. I just ordered a V3, and trying to get the most out of it.

(RSS generated with FetchRss)

ADALM-PLUTO test on 6GHz [00:04:06]

Comment on Salamandra: Detecting and Locating Spy Microphones with an RTL-SDR by Ken

works good, also good for finding RFI around the house and shack, thanks 🙂

Comment on RTL-SDR V3 Amazon Back in Stock + A Preview of our Upcoming Multipurpose Antenna Set by Anonymous

Already have a V3 dongle, but I’ll definitely be getting this little kit when it’s released!

ADALM-PLUTO / LNA4ALL @ L-band [00:03:33]

RTL-SDR Discussion • Re: satellite AIS

Orbcomm have a number. : http://www.decodesystems.com/orbcomm.html

And AAUSAT3 : https://en.wikipedia.org/wiki/AAUSAT3

AIS-SAT-1 /2 :https://directory.eoportal.org/web/eoportal/satellite-missions/a/aissat-1-2


SRT are making transceivers for S-AIS to help improve reception, especially of AIS B which is low power.

Statistics: Posted by jimmid — Mon Aug 28, 2017 12:58 pm


VLF Radio Signals received in Macedonia [00:06:29]

Very Low Frequency (VLF) receiving in Macedonia.
In this video I am presenting several radio signals in frequency spectrum from 10 kHz to 100 kHz that can be received in S/E Europe. Antenna is homemade excellent Mini-Whip active antenna on 9m fiber-plastic pole in my backyard, located in the city of Stip, Republic of Macedonia. In urban area, with a lot of man made noise, which is a major problem in receiving radio signals on such low frequencies. Fortunately, when the mini-whip antenna is properly installed, it is excellent for receiving VLF, LW, MW and low part of HF bands. Other antennas which I have in my backyard (like Delta loop 43 meters long, and 80 meter Long-Wire) are almost unusable in such low frequency...
You can see the frequent crashes produced by atmospheric conditions in the middle of the summer here. VLF radio receiving is much better in winter when the conditions are much more "quiet".

Cheap combo receivers

Hi folks,

you can find many rtl-sdr sticks on Amazon and eBay these days. Some of them also offer upconverters to extend the range. There are also combined devices like this one here: http://www.ebay.de/itm/401143751181

Is there anyone who tested such a device? Are they properly shielded?

Second thing is - I did not find a description on how to use these devices with upconverters. AFAIK the R820T covers 24 MHz to 1760 MHz. The description of the upconverters state that they cover 100KHz and below. I would say that the description is not ok - isn't it the range from 100KHz to 24MHz? Or is it the experimental HF direct sampling mode that is used? Does the tuner know about the new frequency it is capable of receiving?

I own two cheap sticks: R820T (noname) and E4000 (Cinergy T stick Rev. 3). The E4000 displays way more spikes, especially a big spike on the tuned frequency. There is one guy on youtube that compares R820T upgraded with shielding and another factory shielded R820T2 and comes to the conclusion that his R820T is the better one. I don't have an oscilloscope or a signal generator - what is the best way to test the capabilities of these sticks?

Thanks in advance,

Hans

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

rtl nomod direct sample experiment

https://imgur.com/a/W2nbi

My current setup is not orthodox but its a start. I'm pretty sure my antenna is using mains ground, as it is a piece of copper (from a stripped Type F Coax) connected to a screw on the outer shell of my air conditioner unit in the window. I was able to pick up WEFAX at 8503khz as well as CHU at 3330khz, at about 3:30-4:00am EDT.

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