Архив за 15.10.2019

Алексей к «Модифицированный плагин записи из комплекта SDRSharp.»

Очень давно пользуюсь данным плагином , но сейчас с выходом новой версии SDR# с поддержкой тем , стало неудобно пользоваться из за цвета интерфейса. Нет ли возможности сделать данный плагин под темный интерфейс новой версии SDR# ? Заранее извиняюсь !

Алексей к «Сканер + поиск новых частот.»

Очень давно пользуюсь данным плагином , но сейчас с выходом новой версии SDR# с поддержкой тем , стало неудобно пользоваться из за цвета интерфейса. Нет ли возможности сделать данный плагин под темный интерфейс новой версии SDR# ? Заранее извиняюсь !

Comment on A NanoVNA 2.0 is in the Works: Same Price, Frequency Range up to 3.5 GHz, Higher Dynamic Range by n6grg

New with this VNA. The following was said :”The RFIC used is the same as for the receiver RF switch, and it turns out all the maxscend switches do not have the shunt diode problem (most RF switch ICs have parasitic diodes from RF input to ground which will start to conduct at lower frequencies)” I see no lower freq number, anyone know what it is ?

RTL-SDR Discussion • WXtoimg Decoding

New user alert.

I recently received my RTL-SDR kit including the V-dipole set-up. The dipole is stuck on my window facing SE, so I appreciate that right now the bulk of my house will be a problem with certain passes. But even so, when a satellite comes in from SSE I have no trouble seeing the signal in Airspy.

Then I installed WXtoimg. I was surprised to find that out of the box it automatically recorded and (tried to) decode satellite passes (even the ones that there's no signal from due to being in the west and quite low). The decode is just noise as per this image
NOAA-19-10151522.jpg
. Or so I thought.

At this stage, I wasn't too worried and was about to start fiddling around. Well, actually I did start fiddling around, and noticed that the displayed thumbnail in the Audio Files tab of WXtoimg for this pass was this image
tmb_NOAA-19-10151522.jpg
It seems to be a perfect image of a cloud mass over the flight path.

What the heck am I missing here? How do I get WXtoimg to decode to a full image like that? Any pointers to the settings I need (or posts which cover that specific topic? I have searched, but didn't come up with anything.

I'm using essentially default settings, but with Baykal as the receiver type. I installed a virtual audio cable and set both Airspy and WXtoimg to use that.

Any advice would be gratefully received.

Statistics: Posted by Sualdam — Tue Oct 15, 2019 9:27 pm


Comment on SDRplay Spectrum Analyzer Software Updated to V1.0a by G Bubb

I do wish people would say when their programme does not work with WinXP. Plenty of us are still using it.

Antennas • Re: 1090 Antenna for Onbord use?

I want see how the flight attendant react when you show them a 2m Antenna on board the Plane....

Statistics: Posted by Username — Tue Oct 15, 2019 7:02 pm


Antennas • Re: 1090 Antenna for Onbord use?

Fake, you will receive but not have the advertised gain.

Gain depends on the antenna design but there are no miracles and gain requires certain physical dimsions.

The first antenna is supposed to have "10 dBi" while the second antenna is supposed to have "7 dBi", but both have the same physical length of 375 mm.

If you compare 375 mm to comercial antennaes from Kathrein, why are they so much longer to achieve similar gain?

9 ±0.5 dBi antenna for ~960 - 1215 MHz with ~1.95 m length see page 58 https://www.kathreinusa.com/wp-content/ ... e_2017.pdf
and
11 ±0.5 dBi antenna for 1030 and 1090 MHz with 2.7 m length
for a comercial antenna from Kathrein for the band with with meassured see page 63 https://www.kathreinusa.com/wp-content/ ... e_2017.pdf

Statistics: Posted by snn47 — Tue Oct 15, 2019 6:42 pm


found this scrapped 5m reflector! should i go for it? any applications i haven’t thought of? gso sats? xpost from /r/radioastronomy

found this scrapped 5m reflector! should i go for it? any applications i haven't thought of? gso sats? xpost from /r/radioastronomy submitted by /u/GeneralReposti_Bot
[link] [comments]

RTL-SDR Discussion • SDR Comparison

For amateur radio use, particularly Satalite work, how do the rti dongles compare with other more expensive ones... Just curious.

Statistics: Posted by W1RNY — Tue Oct 15, 2019 3:09 pm


RTL-SDR Discussion • No audio

Just setup with sdr#.
Was able to hear FM but strangely, one station I should be able to hear I didn't. I put up the gain.

I tried to hear my HT on the two meter band. I could see a wave form, but there was no audio.

What setting might I be missing?

Statistics: Posted by W1RNY — Tue Oct 15, 2019 3:06 pm


Перевод
Рубрики
Архивы
Октябрь 2019
Пн Вт Ср Чт Пт Сб Вс
« Сен   Ноя »
 123456
78910111213
14151617181920
21222324252627
28293031