WSPR - Weak Signal Propagation Reporter

1. Zoltán Dóczi - HA7DCD Raspberry Pi Shield
2. Joe Taylor K1JT - WSJT-X Application
3. Kits for Rpi WSPR Transmitters
4. Building a qrpi daemon on Rpi to run the wsprry application
5. Network Time Protocol
6. QRPGuys-EZ-WSPR-Pi-Adapter
7. Tracking WSPR Transmission Worldwide

1. Zoltán Dóczi - HA7DCD Raspberry Pi Shield
2. Joe Taylor K1JT - WSJT-X Application
3. Kits for Rpi WSPR Transmitters
4. Building a qrpi daemon on Rpi to run the wsprry application
5. Network Time Protocol
6. QRPGuys-EZ-WSPR-Pi-Adapter

Zoltán Dóczi - HA7DCD Raspberry Pi Shield

Joe Taylor K1JT - WSJT-X Application

Kits for Rpi WSPR Transmitters

Building a qrpi daemon on Rpi to run the wsprry application

This transmitter implements WsprrPi Raspberry Pi, bareback LF/MF/HF/VHF WSPR transmitter aplication to make a very simple WSPR beacon from your RasberryPi by connecting GPIO port to Antenna. It is theorically capabe of operating on bands from 0 to 250 MHz. The Github respository can be foulnd at: https://github.com/JamesP6000/WsprryPi

Build the wsprry application on the Rpi3:

cd # change to home folder sudo apt-get install git login as pi cd packages # git clone https://github.com/JamesP6000/WsprryPi.git #** THIS PACKAGE ERRORS WITH g++ Ver 8 ** git clone https://github.com/g4wnc/WsprryPi.git cd WsprryPi make make install # Installs # install -m 0755 wspr /usr/local/bin # install -m 0755 gpioclk /usr/local/bin # wspr VK4PK QG62qi 20 20m # test execution tail -20 ~/logs/wspr.log

Usage: wspr [options] callsign locator tx_pwr_dBm f1 <f2> <f3> ... OR wspr [options] --test-tone f Options: -h --help Print out this help screen. -p --ppm ppm Known PPM correction to 19.2MHz RPi nominal crystal frequency. -s --self-calibration Check NTP before every transmission to obtain the PPM error of the crystal (default setting!). -f --free-running Do not use NTP to correct frequency error of RPi crystal. -r --repeat Repeatedly, and in order, transmit on all the specified command line freqs. -x --terminate <n> Terminate after n transmissions have been completed. -o --offset Add a random frequency offset to each transmission: +/- 80 Hz for WSPR +/- 8 Hz for WSPR-15 -t --test-tone freq Simply output a test tone at the specified frequency. Only used for debugging and to verify calibration. -n --no-delay Transmit immediately, do not wait for a WSPR TX window. Used for testing only. Frequencies can be specified either as an absolute TX carrier frequency, or using one of the following strings. If a string is used, the transmission will happen in the middle of the WSPR region of the selected band. LF LF-15 MF MF-15 160m 160m-15 80m 60m 40m 30m 20m 17m 15m 12m 10m 6m 4m 2m <b>-15 indicates the WSPR-15 region of band </b>. Transmission gaps can be created by specifying a TX frequency of 0 sudo raspi-config # disable graphical desktop and use console

su - pi mkdir bin cd bin vi qrpi-daemon.sh

#!/bin/sh # # qrpi-daemon.sh - to run QRPi wspr transmitter # Glenn N Lyons 20171006 # run from systemd at boot time. See /lib/systemd/system/qrpi.sh # DO NOT EDIT unless changes are compatible with systemd call # **** NOTE!!! the #!/bin/sh on line one is essential for systemd to operate # CALLSIGN=VK4PK QTH=QG62 # QTH=QG62qi # changed to six char maidenhead LOC LOGDIR=/home/pi/logs LOGFILE=${LOGDIR}/wspr.log TEMP=${LOGDIR}/tempreature.log # # Rotate the logfile five times if [ -f ${LOGDIR}/wspr.4.log ] then mv -f ${LOGDIR}/wspr.4.log ${LOGDIR}/wspr.5.log fi if [ -f ${LOGDIR}/wspr.3.log ] then mv ${LOGDIR}/wspr.3.log ${LOGDIR}/wspr.4.log fi if [ -f ${LOGDIR}/wspr.2.log ] then mv ${LOGDIR}/wspr.2.log ${LOGDIR}/wspr.3.log fi if [ -f ${LOGDIR}/wspr.1.log ] then mv ${LOGDIR}/wspr.1.log ${LOGDIR}/wspr.2.log fi if [ -f ${LOGDIR}/wspr.log ] then mv ${LOGDIR}/wspr.log ${LOGDIR}/wspr.1.log fi # vcgencmd measure_temp >>$TEMP # sample the RPi's tempreature vcgencmd display_power 0 >>$LOGFILE # turn off video power # sudo /usr/local/bin/wspr -r -o -s $CALLSIGN $QTH 20 20m 0 0 0 0 </dev/null >>$LOGFILE 2>&1 # #-------------------------- end of file ----------------------------------

sudo vi /lib/systemd/system/qrpi.service

# qrpi.services - Startup QRPi wspr transmitter as daemon service # Glenn N Lyons VK4PK # 20171005 # /lib/systemd/system/qrpi.service [Unit] Description=QRPi WSPR Transmitter After=multi-user.target [Service] Type=simple User=pi WorkingDirectory=/home/pi/qrpi ExecStart=/home/pi/bin/qrpi-daemon.sh Restart=on-abort [Install] WantedBy=multi-user.target # # -------------------------- end of file ----------------------------------

chmod +x bin/qrpi-daemon.sh mkdir /home/pi/logs sudo chmod 644 /lib/systemd/system/qrpi.service sudo chmod 774 /home/pi/logs sudo touch /home/pi/logs/wspr-systemd.log sudo chmod 664 /home/pi/logs/wspr-systemd.log sudo systemctl daemon-reload sudo systemctl enable qrpi.service ps -eaf | grep wspr tail -f ~/logs/wspr.log

After all that setup DO A BACKUP!:
dd if=/dev/sdc status=progress |gzip -c >qrpi-`date.img.gz

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Network Time Protocol

The Raspberry Pi WSPR transmitter using NTP based frequency for calibration. An accurate clock is essential for sucessfull operation of the Weak Signal application. This relies upon NTP functioning accurately. The ntpq utility program is used to query NTP servers which implement the recommended NTP.

http://doc.ntp.org/4.1.0/ntpq.htm

Check that ntp is available:
sudo apt install ntp ntpq -p

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QRPGuys-EZ-WSPR-Pi-Adapter

Tracking WSPR Transmission Worldwide

Locate stations that are receiving your signal
http://wsprnet.org/drupal/wsprnet/map

http://wsprd.vk7jj.com/

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