linux help

Ok so having another bash at iridium using dragonOS instead of a clean ubuntu install. Gr-iridium now calls for gnuradio 3.8. however in the instructions you can use 3.7, this is where im stuck. its says " If you want to build for GNURadio 3.7: Make sure to use the main-3.7 branch of this repository (i.e. run git checkout maint-3.7 before installation).

https://github.com/muccc/gr-iridium

https://www.youtube.com/watch?v=1cU3CXF8hxg&feature=emb_logo

thats where im stuck,what and where do i type this command in the installation process?

he also has it installed in a different folder such as usr/src?

many thanks in advance.

edit: added content

submitted by /u/sirio2012
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User Projects • Re: Absolute FFT Beginner Project

hotpaw2 wrote:
Tue Aug 27, 2019 6:31 pm
There are pointers to SDR DSP tutorials right on this site:
https://www.rtl-sdr.com/tag/digital-signal-processing/

Plus more tutorials online, with source code, such as:
https://www.g0kla.com/sdr/index.php

The ARRL also has pointers to some resources:
http://www.arrl.org/software-defined-radio
Here's one QEX article that says it "minimizes" the math:
http://www.arrl.org/files/file/Technolo ... qex013.pdf
Thanks for the good links and tutorials! I'm a newbie, so this helps me a lot. :) :idea:

Statistics: Posted by makero — Thu Jul 02, 2020 9:23 am


NanoVNA V2 Video Tutorials

The NanoVNA V2 (aka S-A-A-2) is a vector network analyzer (VNA) with 50 kHz to 3 GHz frequency range. Recently is has become readily available for around $60 + shipping from the Tindie store. We like this product a lot and are planning to get some for our store soon as well.

A Vector Network Analyzer (VNA) is an extremely useful tool for radio hobbyists as it allows you to measure and tune antennas and filters, as well as measure cable loss among other applications. Until recently low cost VNA's cost hundreds of dollars. Then came along the original NanoVNA which brought expensive VNA capabilities to the masses with its low $40 pricing. But the original design is limited to a maximum frequency of only 900 MHz. The new V2 design pushes this maximum frequency up to 3 GHz officially, and unofficially up to 4.4 GHz with reduced performance. It also improves on overall dynamic range and maintains the affordable sub $100 price. We note that the NanoVNA V2 is unrelated to the original NanoVNA apart from being the inspiration, and sharing the same firmware base.

Over on YouTube Robert J. Meade has been uploading a series of videos demonstrating and teaching viewers how to use the NanoVNA V2 to measure various devices. For example in his videos he shows how to use the NanoVNA V2 to measure one of our RTL-SDR Blog Broadcast FM filters, how to measure a log spiral & clover antenna, use measurements to rebuild a variable attenuator, measure an active device (SAWbird+ NOAA), and how to measure a DIY microstrip L-band LNA. If you're just getting started with the NanoVNA V2, then these are some great videos to start with.

NanoVNA V2 First Measurements V2: Log Spiral & Clover Antennas (Above 900 MHz & up to 3GHz)

Other SDR Devices • SPECTRAN V6 with 245MHz IQ streaming via USB?

Hi folks!

I just found this new USB SDR from Aaronia: https://aaronia.com/downloads/#tab_4

How can they stream 245MHz IQ via USB? I dont get it.

Whats the price tag?

Statistics: Posted by SDR-Marx — Thu Jul 02, 2020 7:40 am


Comment on Submit a Story/Contact by larry cagle

I have five of your wonderful little RTL-SDR dongle radios which we use for Amateur Radio Meteor Scatter Research. I would buy more of them if I could find a way to use it as a frequency selective signal strength indicator. I need the data that produces the signal strength in db from the s-meter function. I am using HDSDR for the 5 i have now but i would use any software i could get to stream the signal strength data and time stamp into a file or out a port of some kind so it could be recovered. I am typically running in USB or CW mode with 2.7 khz or 200 hz filter so all the info i need from the stream is just the continuous output of the signal strength, preferably in db.

Thanks for a great little product that has never let us down.

Larry, K4WLO

Linux or Windows acceptable

WXtoIMG help

Hi, I'm brand-new to the community and am trying to get my first setup finished. I have a NESDR SMArt and I'm using SDR# with WXtoIMG. I'm attempting to read the GOES signals at 1.6941 and seem to be getting signal just fine, but when I try to record in WXtoIMG, I get an error "Warning: could not open serial port (COM1)". I'm using VB Cable to direct the audio output from SDR# to WXtoIMG. I haven't found anyone else with this problem - any suggestions?

submitted by /u/MattiasM_
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WXtoIMG help

Hi, I'm brand-new to the community and am trying to get my first setup finished. I have a NESDR SMArt and I'm using SDR# with WXtoIMG. I'm attempting to read the GOES signals at 1.6941 and seem to be getting signal just fine, but when I try to record in WXtoIMG, I get an error "Warning: could not open serial port (COM1)". I'm using VB Cable to direct the audio output from SDR# to WXtoIMG. I haven't found anyone else with this problem - any suggestions?

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

Hak5: Turning a Key Croc into an RTL-SDR Server

The Hak5 Key Croc is a pentesting tool designed for emulating USB devices such as keyboards. It is commonly used by pentesters for keylogging and keystroke injection. It has some advanced features like keyword detection which can be used to detect when a certain word is typed. Under the hood it runs Linux on a quad-core ARM processor.

Over on the Hak5 YouTube channel Glytch shows us that he's been using the Key Croc as a remote RTL-SDR server. The server is setup through a payload script, which is then activated by typing "setup" into notepad on a PC. The keystroke logging and keyword detection feature detects the setup keyword, and runs the payload script which installs the RTL-SDR drivers and rtl_tcp server all while using the keystroke injection feature to output the install progress. Then it is a simple matter of plugging in an RTL-SDR, and connecting to the rtl_tcp server on a program like SDR#. 

Glytch notes that this is useful because you can run the entire Key Croc server and RTL-SDR on a portable battery pack, and now you have a remote SDR that you can place anywhere within your WiFi network.

Turning a KeyCroc into an RTL SDR Server w/ Glytch

Комментарий к записи Wiki RTL-SDR (Jennaarcah)

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RTL-SDR Questions

Hey everyone I just recently got my sdr and got it up and running. My question is what is the best way to go about picking up the HAM freqs? Is what I got in the RTL-SDR package enough equipment or do i need a better grounded antenna rig? Any info is appreciated thanks all.

submitted by /u/reyn13
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