RX888D - how to start ?

[Tom McDermott]

The RX888D MKII has been received, installed ka9q-radio, created fft nwisdom, installed & started avahi.

In trying to start rx888d as standalone, and as daemon, there seem to be missing some files.   

./rx888d g5rv &   - fails no such file or directory

The only things $find / -name 'rx88*'    found are:

/home/tom/ka9q-radio/rx888d@.service
/home/tom/ka9q-radio/rx888.h
/home/tom/ka9q-radio/rx888.o
/home/tom/ka9q-radio/rx888.c
/home/tom/ka9q-radio/rx888d.conf

Thus the command(s) to run rx888d fail.  Was an rx888d executable supposed to be generated?

-- Tom, N5EG

[Michael Hauan]

The only code I'm using (got rid of any other potential competing Cypress drivers) is ka9q-radio.  Simple git clone.  

Read the INSTALL.txt to get the required libraries and see where everything goes.  

Then "make" and "sudo make install" will get everything in the right places.  

I guess you got this far, for sure.

Add yourself to the "radio" group.  

Follow the instructions in docs/FFTW3.md in the ka9q-radio directory to create and move a wisdom file.  

You'll have to re-login to get in the group.  

You might examine the /etc/radio/rad...@rx888-generic.conf to confirm the virtual radios you want and to decrease the sample rate (if you want) which by default is at 128MHz. 

Then enable and start rad...@rx888-generic.service using systemctl.  

If it's running ok (check with sudo systemctl status radiod@rx888-generic) you should be good to go.  

Confirm by running "monitor wspr-pcm.local" (or whatever pcm-streams you configured).

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[Tom McDermott]

Thanks, Michael.    I went through the install instructions in ka9q-radio successfully, and also the instructions on

the Utah WebSDR pages.  That all went properly.

I've added myself to the radio group, and logged-out/logged-in, my user is showing as

a member of the radio group.  But nothing changed - rx888d executable is still not found anywhere.

-- Tom, N5EG

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[Michael Hauan]

I think it runs via the service. 

I haven’t tried to execute it directly since listening to Phil and Rob last week.  

Before that, I also executed radiod from the command line to make it easier to start and stop rather than stopping or starting the service.  But now I’m just using the default config in /etc/radio and starting the service.  

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[Michael Hauan]

I recall Phil saying he wrapped the frontends into radiod so no need to start rx888d directly anymore.

On Jul 24, 2023, at 19:21, Tom McDermott <tom....@gmail.com> wrote:

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[Michael Hauan]

BTW — if you intend to use wspr-decoded, I’ve been using the following script with some success.  Just run "wspr-decoded wspr-pcm.local &” (assuming you’ve made the [wspr] definition active in rad...@rx888-generic.conf).  That will decode wspr signals in each frequency and store them in a separate subdirectory of ~/recordings/wspr.  The following script (change your call and grid square) will parse the files and upload them.  I put it on a cron job to run every 10 min.

---

import os

import subprocess

import requests

def process_and_upload_wspr(directory, call, grid):

    print(f"Processing and uploading in directory: {directory}")

    # Change to the target directory

    os.chdir(directory)

    # Input and output file names

    ALL_WSPR_FILE = "ALL_WSPR.TXT"

    ALLMEPT_FILE = "ALLMEPT.TXT"

    # Remove lines that contain the value of CALL from ALL_WSPR.TXT

    with open(ALL_WSPR_FILE, 'r') as input_file:

        lines = input_file.readlines()

    with open(ALL_WSPR_FILE, 'w') as output_file:

        for line in lines:

            if call not in line:

                output_file.write(line)

    # Sort the data by highest SNR, print unique date/time/band/call combinations,

    # and then sort them by date/time/frequency

    sort_cmd = f"sort -nr -k 4,4 {ALL_WSPR_FILE} | awk '!seen[$1\"_\"$2\"_\"int($6)\"_\"$7] {{print}} {{++seen[$1\"_\"$2\"_\"int($6)\"_\"$7]}}' | sort -n -k 1,1 -k 2,2 -k 6,6 -o {ALLMEPT_FILE}"

    subprocess.run(sort_cmd, shell=True)

    # Upload the processed data using curl

    url = "http://wsprnet.org/post"

    files = {'allmept': open(ALLMEPT_FILE, 'rb')}

    data = {'call': call, 'grid': grid}

    response = requests.post(url, files=files, data=data)

    if response.status_code == 200:

        print("Upload successful.")

        # Empty the ALL_WSPR.TXT file after a successful upload

        open(ALL_WSPR_FILE, 'w').close()

    else:

        print("Upload failed.")

    # Clean up the temporary file

    os.remove(ALLMEPT_FILE)

if __name__ == "__main__":

    # Directory where the subdirectories are located

    base_directory = os.path.join(os.path.expanduser("~"), "recordings", "wspr")

    # Common values for call and grid

    CALL = "AC0G"

    GRID = "EM38ww"

    # Iterate through all subdirectories under ~/recordings/wspr

    for subdirectory in os.listdir(base_directory):

        full_directory_path = os.path.join(base_directory, subdirectory)

        if os.path.isdir(full_directory_path):

            process_and_upload_wspr(full_directory_path, CALL, GRID)

----

On Jul 24, 2023, at 19:21, Tom McDermott <tom....@gmail.com> wrote:

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[Jonathan]

Tom,

Like Michael said, rx888d was integrated into radiod but was not documented yet, so initiate radiod with an appropriate config file (there are some you can modify). Use & to run it as a background process or write a script. Choose the appropriate sampling rate for the frequencies of interest to reduce resource usage.  

Jonathan

KC3EEY

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