Архив за 09.12.2018

Not a cloud in the sky. I’m assuming my antenna is missing something.

Got the "clearest" images from NOAA 19 last night after moving my antenna, but as you can see there is zero weather data. Are these so clear because they're completely empty and I'm just seeing the WXtoImg templates for my location?

https://imgur.com/a/YmeGWI9

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

Antennas • Re: 1090 Antenna real or Fake?

The first one doesn't even have the right connector, it's using an RP-SMA connector meant for WiFi devices.

The whip type antennas are quite trash unless you're actually in a plane. Go for a FlightAware antenna or similar. Should still be small enough to hide behind a window.

Statistics: Posted by rtlsdrblog — Sun Dec 09, 2018 10:33 pm


Other SDR Devices • Bladerf SDR sharp

Hello everyone
Hardware: Bladerf x40 and the XB 200 addon board.
There is a plugin (SDR Sharp) that should make this board usable with it, the problem is that my blade isn't listed even if the magic line is inserted correctly, all dll and other files are installed.
SDR Console V2 isn't recognising the board and SDR Console V3 is capable of seeing it only if the Bladerf v2 is selected as receiver but SDR Console V3 has no clue about the XB 200 board. I guess that the last firmware has trashed something.
Anyone out there with a functioning version of sdr sharp that can drive the Bladerf x40 and willing to share it?

Thanks
Emil

Statistics: Posted by EmilK — Sun Dec 09, 2018 9:10 pm


Подскажите дальнобоев слышно будет?27 мгц.вроде должен поймать….

Подскажите дальнобоев слышно будет?27 мгц.вроде должен поймать.

Antennas • Fake 1090 Antenna

There is a difference between theoretical and real meassured gain, and here it is a placebo gain to bait buyers, because you can't cheat physics.

To give you an idea of the necessary size for an vertically polarized omnidirectional antenna with meassured 10 dBi gain look at https://www.kathreinusa.com/wp-content/ ... 715986.pdf. The active antenna length is about 1945 mm.

An increase in gain will either limit the beamwidth in azimuth or elevation, as you can see from the narrow elevation pattern.

Some antenna, e.g. 1/4 wave-length monopoles are smaller, but require a ground plane of sufficent size to operate, e.g. aircraft blade antenna for 960 - 1215 MHz, while small in size require a 3 ft by 3 ft as ground plane (source DME/SSR MOPS).

Furthermore in order to obtain the gain requires that an antenna is clear ob obstacles, any non-conductive and conductive in the direction to the source you want to receive, The closer they are to an antenna the more distorted the antenna pattern and the lower gain is.

Statistics: Posted by snn47 — Sun Dec 09, 2018 7:13 pm


Thanks to add me ! I am new and I appreciate any suggestion about best dongle & software for windows…

Thanks to add me ! I am new and I appreciate any suggestion about best dongle & software for windows Pc. Suggestion ? Regards.

(RSS generated with FetchRss)

[Newbie] 433 mhz Antenna Questions

Hi. Brand spanking new to RTL SDR. Bought a cheap Chinese dongle with the intention of using it to listen to 433 mhz signals, decode, and pipe to my existing Home Automation system. I'm using rtl_433 with the included antenna and am seeing some messages, but I am hoping to improve my reception. I'm looking for information on either building an antenna tuned for 433 mhz, or purchasing one if they exist. I am handy with a soldering iron.

The product page states that it has a '75 Ohm IEC(Din) Connector'. Is there an adapter that can be purchased that goes from that size to f connector (normal CATV connector)? Is there a downside in doing something like this? I've got a ton of shielded RG6, connectors and tools.

This is the dongle that I purchased:

https://www.banggood.com/USB-2_0-Digital-DVB-T-SDR-DAB-FM-HDTV-TV-Tuner-Receiver-Stick-For-Windows-XP-p-991349.html?rmmds=myorder&cur_warehouse=CN

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

Antennas • Re: 1090 Antenna real or Fake?

I would say its a fake - the 10 db statement - my 10 db antenna has 1.8 m length. The one in your post has 37 cm.

Statistics: Posted by EmilK — Sun Dec 09, 2018 3:36 pm


Get this constantly on my turnstile antenna. Yesterday received a good quality part of a NOAA image. Why could this be happening?

Get this constantly on my turnstile antenna. Yesterday received a good quality part of a NOAA image. Why could this be happening? submitted by /u/evsey9
[link] [comments]

Hr transceivers…Who said anything about a "deal" ? Answer:- no one until they got beat in the referendum

Hr transceivers...Who said anything about a "deal" ? Answer:- no one until they got beat in the referendum submitted by /u/wakeyswl
[link] [comments]
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