Is this Satcom? 260.53Mhz and 260.42Mhz

Not sure what language they are speaking. Could be Russian?

submitted by /u/plummet555
[link] [comments]

RTL-SDR Discussion • Re: Finding a Weather Balloon

Presumably a radio + computer will receive and decode the APRS?
Then have that in your van. If it is possible to receive with a directional antenna the exact position will be known. Tracking as you drive will give a good idea where it may land.
Having said that maybe a group devoted to weather balloons might be a better place to ask.
Never rely on the StratoTrack to locate your payload once it has landed. We always recommend flying a satellite tracker on your payload whenever you want to recover your payload.

Which may be good advice.


Statistics: Posted by alanzfq — Sun Jan 26, 2020 8:12 am

Help with ADS-B on Ubuntu

I'll be brutally honest here... I have no clue what I am doing. Haven't touched Linux since I got a RPi 3b+? Back then I successfully got dump1090 working. I have just downloaded and installed Ubuntu 18.04 on a spare laptop and I'll be damned if I can get it to run. Tried downloading it, tried using Snap, tried from the built In Ubuntu Software center... Gave up on that and tried ADSbox and was not successful there either.

Is there a concise, easy to use guide anywhere for getting dump1090 and VRS set up on Ubuntu?

Seriously, after 3 days (on and off) with no progress, I'm ready to say screw it and go back to windows... :(

submitted by /u/er1catwork
[link] [comments]

RTL-SDR Discussion • Re: sdrsharp 1700

hello ,
all runned well with your link,but i have made a mistake,i am not a specialist
of radio and computer,and the 1700 version run not well.
Can you to give me a new time your link,it would very sympa.
Thanks for advance,best regards

Statistics: Posted by abt552 — Sun Jan 26, 2020 5:35 am

RTL-SDR Discussion • Finding a Weather Balloon

Short version - I’m looking for a way to track and/or decode the APRS transmitter of an amateur weather balloon.

I’m a school teacher who will be leading a group of students launching a weather balloon for our school. We want to recover the payload - since it is worth several hundred dollars and contains all the footage of the flight.

Toward that end, we have 2 trackers. One is an APRS transmitter that should give us telemetry every 60 seconds during flight. Here’s a link to it: ... e_V1.0.pdf

My understanding is that the transmitter should work well at altitude (where it will have good LoS to multiple towers), but will likely not work once it’s landed (unless there is a lucky tower in range).

Here’s my question: is there some way our ‘recovery team’ (me and some students in a van) could use a direction finder to track the source of the APRS transmitter once we get close to the source? Would it also be possible for us to decode its signal in the field (it would be broadcasting GPS coordinates that might help us find it). What would be the best way to go about this?


Statistics: Posted by Merlinus12 — Sun Jan 26, 2020 2:08 am

I wonder if this would work for ADSB reception with my outdoor RasPi & RTL-SDR.For $18.00, I might just gamble. I’m using a folded dipole at present

I wonder if this would work for ADSB reception with my outdoor RasPi & RTL-SDR.For $18.00, I might just gamble. I'm using a folded dipole at present

(Feed generated with FetchRSS)

Temperature scales on wxtoimg images — desktop / command line

Temperature scales on wxtoimg images - desktop / command line

Using the desktop version of wxtoimg, it can add temperature scales to the final image as seen with this example from a NOAA 19 pass.

Example image (sea temperature) with temperature scale

However I've been unable to determine how to get the temperature scales added to images created using the command line options available for wxtoimg, as documented in the wxtoimg manual.

The manual does say on page 14:

Sea Surface Temp Palette

Allows selection of the palette for the Sea Surface Temperature and Daylight Sea Surface Temperature enhancements. PNG, BMP and PPM format files are supported. See the -P option in the wxtoimg command line manual for the technical details. If left blank, then the default Sea Surface Temp Palette is used.

The -P option info can be seen from running:

wxtoimg -h


-P <plte> specify the pathname of the palette to use


The same -P option info is shown for the Windows and Raspberry Pi versions (2.11.2 beta).

But there is no detail on what the palettes are or even if using this option will result in the temperature scale being included in the image output.

Has anyone got this working from the command line?

Does anyone know if the temperature scale is a fixed temperature scale or if it will vary between images using the same image processing arguments? If fixed I could crop the scales from images produced using the desktop version and figure out how to merge the scale into images.

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

A post from Christian Amestegui

(Feed generated with FetchRSS)

Troubleshooting Help • Re: Hardware issues with NooElec NESDR Nano 3, or software?

Hmm, the ports I'm using now are the same as the ports I was using when I was experiencing issues. I would think the internal hub would remain the same if the ports used are the same, unless it's something virtual that I am not quite understanding.

Both are the rear, USB-A ports on the NUC. Honestly, the only difference is that the USB extension cable I'm using with the z-wave stick is quite a bit shorter. Maybe the decreased resistance in the shorter cable is the only thing making it stable?

Regardless, thanks for the suggestions!

Statistics: Posted by Legomaniac — Sun Jan 26, 2020 12:35 am

KerberosSDR • Re: Wifi Trouble

Чтобы просканировать сеть WIFI вводим команду:

sudo iwlist wlan0 scan
Находим нужную нам сеть. Дальше редактируем файл настроек подключения:

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
Пропускаем первые 2 строчки:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
И в конце файла добавляем свои настройки wifi


Statistics: Posted by qlolp — Sat Jan 25, 2020 11:23 pm

Январь 2020
Пн Вт Ср Чт Пт Сб Вс
« Дек