sdr | Random collection of SDR and modulation scripts | SDK library
kandi X-RAY | sdr Summary
kandi X-RAY | sdr Summary
This repository is a loose collection of SDR, analog and digital modulation scripts.
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Top functions reviewed by kandi - BETA
- Ingest audio samples
- Generate a timestamp
- Vote by autocorrelation
- Vote based on dbfs
- Create a wav file
- Squelch the output
- Decode the given message
- Find the syndromes of the given chromosomes
- Return a list of the different digit digits
- Encode a message
- Calculate the RS digit for a message field
- Difference between two time series
- Calculate the complex cosine between two vectors
- Calculate the phase of a complex complex
- Wrapper function for low - pass convolve
- Calculate lowpass coefficients for a given cutoff cutoff
- Kill the queue
- Ingest samples in the queue
- Closes the queue
sdr Key Features
sdr Examples and Code Snippets
Community Discussions
Trending Discussions on sdr
QUESTION
I'm using Visual Studio with asp.net, vb.net, and webforms. I am trying to concatenate each RoleDescription and FirstName and add them into a new column on my datatable.
This line Dim RoleNameConcat = sdr.GetValue("RoleDescription") + " - " + sdr.GetValue("firstname") throws the error
System.FormatException: Input string was not in a correct format.
How can I create this column in my datatable with the concatenated two values, separated with a dash?
...ANSWER
Answered 2021-Jun-13 at 13:13Populate your table first, then add the column with its Expression property set to automatically populate it from the other two:
QUESTION
I am using Visual Studio, web forms, and vb.net. Why is my list count 0 outside of PopulateNames()?
I have a list at the top of my vb.net code:
...ANSWER
Answered 2021-Jun-11 at 22:42Assumption: This is a Winforms application.
Don't open the connection until directly before the .Execut.... To save a few indents, you can combine the connection Using and the command Using with a comma at the end of the connection Using. You can pass the CommandText and the Connection directly to the constructor of the Command.
You don't want to fill lists and, definitely, you don't want to update the user interface (comparatively, a very slow process) while the connection is open. Readers require an open connection. Just fill a DataTable and shut down the database objects.
To fill the CheckedListBox just set the DisplayMember, ValueMember and DataSource.
QUESTION
I have designed a receiver+FSK demodulator with an osmocom source and it works as it should (sometimes - as I'm finding the results to be somewhat incoherent, but I suspect that might be the transmitter that is at fault). Anyway sometimes the demodulated signal using the quad demod block isn't quite what I expect. With other SDR softwares I can usually change the bandwidth and get more appropriate results. With gnuradio, I find that changing the bandwidth field of the osmocom source block does nothing so I was wondering how does one actually change the bandwidth? And what is that field for if it has no effect? Thank you in advance
...ANSWER
Answered 2021-May-28 at 16:06The bandwidth field of the Osmocom source is used to control an adjustable bandpass filter built into the receiver hardware, when one exists, as opposed to one which is fixed or only adjusts to the requested sample rate.
Probably what you are seeing in other software is the channel filter bandwidth, which is a software filter and usually much narrower than the hardware filter (particularly in SDR receiver software which displays a waterfall simultaneously with demodulation one signal within it).
The purpose of the channel filter is to fit the bandwidth of the signal you want to receive, so that it rejects as much out-of-band noise as possible while not discarding any of the actual signal. If you don't have one, add one. If you do have one, its bandwidth or cutoff frequency is the parameter you're looking to change.
QUESTION
I'm trying to get a RTL-SDR source block (or osmo sdr, since they both work) in GNU Radio, and it apparently must be obtained via the following command lines:
...ANSWER
Answered 2021-May-28 at 11:14Okay I got it!
This guy goes over the required libraries
https://www.youtube.com/watch?v=2IWtEkAHXFI
I was missing swig, and afterwards I was also missing liborc-0.4-dev
They can be installed via:
QUESTION
I'm pulling data from a number of different tables and joining them to a base table as shown below:
...ANSWER
Answered 2021-May-22 at 03:53I am guessing that instead of seeing tidy SQL queries that look like:
QUESTION
I messy column names that have the following format: column name is in English, followed by a slash(/), followed by a same word in French with the year. for example
CSD Code / Code de la SDR 2011,
Education / Scolarité 2011,
Labour Force Activity / Activité sur le marché du travail 2011
is there a tidyverse friendly solution that will let me rename all the columns by removing everything after the slash(/) but keep the year. for example:
CSD Code 2011,
Education 2011,
Labour Force Activity 2011
ANSWER
Answered 2021-May-22 at 03:34You can use a regular expression. With the sample data:
QUESTION
Currently I am saving data to QuestDB through Python via the Influx Line Protocol (ILP) like so:
...ANSWER
Answered 2021-May-18 at 15:00The only way I see would be not using ILP but inserting rows by Postgres Driver psycopg2.
ILP seems like one way protocol to stream data to server in the manner of fire and forget.
QUESTION
I am working on a windows app that will display the Synonym to a TextBox2 if the input on TextBox1 matches any of the data in the Word column of my database table below. My code below only output Joyful when I enter any of the words in Word column Please how can I correct & achieve that?
See my table and code below:
...ANSWER
Answered 2021-May-09 at 15:50How about using parameterized query as below?
QUESTION
I currently have an alias in my .zshrc that looks somthing like this:
...ANSWER
Answered 2021-Apr-30 at 17:13I don't know if it is better, but there is shorter argument to do this
QUESTION
Situation: SerialNumber has duplicate rows and I need to select the latest records and get what is the Status value (either it PASS or FAIL does not matter).
SerialNumber must be check based on the previous StationNumber. Example: I want to get the Status value of the latest record SerialNumber 197601234512345 in Station 2, so value StationNumber = @Station in the command line below is actually "Station 1"
Scenario: SerialNumber can either be pass or fail in Station 1, then SerialNumber exp:197601234512345 is brought forward to Station 2. In Station 2, need to check what latest Status of that SerialNumber exp:197601234512345 has in the previous StationNumber (Station 1).
Example table in the database db:
ID SerialNumber Date Time Date_Time Status StationNumber 213939 197601234512344 2021-04-28 11.53 AM 2021-04-28 11:53:00 PASS Station 1 213940 197601234512345 2021-04-28 11.54 AM 2021-04-28 11:54:00 FAIL Station 1 213941 197601234512345 2021-04-28 12.11 PM 2021-04-28 14:30:00 FAIL Station 2 213942 197601234512345 2021-04-28 12.11 PM 2021-04-28 14:31:00 FAIL Station 2 213943 197601234512344 2021-04-28 12.00 PM 2021-04-28 14:35:00 FAIL Station 3 213944 197601234512344 2021-04-28 12.05 PM 2021-04-28 14:46:00 FAIL Station 3 213945 197601234512344 2021-04-28 12.10 PM 2021-04-28 14:47:00 PASS Station 3Note: All datatype for the columns are VARCHAR(45)
So far, the SQL commands that I have tried has NO Error, but the MySqlreader does NOT Execute the ExecuteReader() which hold the SQL command. How do I know it? By doing the test display label on Label13.Text in Update 1: C# code, At the front-end system it display till Label13.Text = "Check 3"; then direct gives me Label13.Text = "Bad Output";
Below here are my five tried sql commands. But none of it works hurm =( :
...ANSWER
Answered 2021-Apr-28 at 07:58You can use order by to get the latest row top and with Limit 1 you can select only the first row.
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No vulnerabilities reported
Install sdr
You can use sdr like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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