Anotações de radioamador

 Apostila de RADIOELETRICIDADE  (link para o download da apostila original), nela contém erros, no link disponibilizado neste site foi excluido o enunciado das questões e corrigidas as questões conforme documento ERRATAS .

https://blog.retevis.com/index.php/how-to-set-rt3s-aprs/ https://www.ham-dmr.com.br/wp-content/uploads/2018/05/GPS-BRANDMEISTER-TYT-MD380-390.pdf  Desde setembro de 2016, a rede Brandmeister DMR possibilita a utilização da função GPS e o envio da posição em tempo real para a rede APRS  Configurar o suporte GPS no seu rádio é fácil e uma vez que configurado funciona perfeitamente.  As configurações básicas estão listadas em https://wiki.brandmeister.network    Você precisará atualizar o ID do contato ARS com base em seu país.   Consulte a página específica do país no wiki do BrandMeister para obter detalhes.   Para o Brasil, o link é https://wiki.brandmeister.network/index.php/Brazil 2. Configurar o hotspot Configuração em p-star indicativo, DMR ID, frequência em P-star Certifique-se de que o ”DMR master” seja seu ID local. Para latitude e longitude: verifique em https://www.qrz.com/gridmapper Finalize sua posição “Zero” e fixe a grade. Adicio...

https://github.com/DVSwitch/USRP_Client Ainda não conhecemos, estamos estudando como isto funciona, parece simples código em Python. https://ea5gvk-dmr.zigor.es/2020/01/18/nuevo-usrp-client-para-windows10-linux-y-mac-por-el-equipo-dvswitch-con-autoinstable-gracias-a-isma-ea1hg/ Link acima de uma pequena reportagem sobre como funciona.

https://forum.pistar.uk/viewtopic.php?t=1724 https://nq4t.com/making-my-hotspots-beacon-aprs-is-w-real-time-connection-data/ (here explains a lot how it works) Worth trying... PS . See bellow another user has tried with another piece of code.... CODE:  SELECT ALL #!/bin/bash # load nema sentence from GPS gpsr=$(gpspipe -n 8 -r gpsdaddress:2947|sed -n '/$GPGGA/{p;q}') #GPS Sync Check - if no GPS lock, no run gpss=$(printf "$gpsr" | cut -d ',' -f7) test "$gpss" = "0" && exit #we didn't exit so we can continue gps=$(printf "$gpsr" | cut -b 19-42|sed 's#N,#N\\#g'|sed 's#,##g'|cut -b 1-7,10-19,22) #Define login info user=URCALL password=URPASS #Define object user info senduser=URCALL-SSID #Define comment - DMR ONLY # get DMR TG info, parse it, write it to file #dmr=$(curl -s http://pi-stardmr.local/mmdvmhost/bm_links2.php| sed 's/<[^>]\+>//g' | sed 's/None//g' | sed '...

https://forum.pistar.uk/viewtopic.php?t=1048 A few related notes: You can add your coordinates on the Configuration page > General Configuration: Latitude, Longitude, Town (which can include the name of your town, followed by a comma and a space, and then your 6-digit QTH locator grid square), and country. Per Andy Taylor in the Pi-Star Users Support Group: "If you are running D-Star mode, and you add your position information to the dashboard, you will get D-PRS positioning from ircDDBGateway." If you want to prevent sending APRS positioning info via Brandmeister, you can add the tag NOGATE or NOAPRS to the Priority Message field in the BrandMeister dashboard. For a hotspot, you can find that field in the My hotspots settings. You can add an APRS host on the Configuration page > D-STAR Configuration: APRS Host, and also Yaesu System Fusion Configuration > APRS Host. There's also an APRS-related setting in the Expert Editor > ircDDBgateway Quick Editor:...

HOW TO INSTALL THE NEXTION DRIVER log in to your Pi-Star with SSH ( https://github.com/PD0DIB/Nextion_HAM-radio-screens/wiki/FAQ-Nextion.driver-by-ON7LDS ) Then:  cd /tmp get the software git clone  https://github.com/on7lds/NextionDriverInstaller.git go ! sudo NextionDriverInstaller/install.sh Check your software settings in Pi-Star: Goto the Expert Page => MMDVMHost Editor (or mmdvmhost.ini file) to the Nextion part check/set in the  Nextion  part, the driver at  /dev/ttyNextionDriver  (USB adapter) or  /dev/ttyAMA0  (connected to GPIO-RPi) check/set in the  NextionDriver  part Port:  /dev/ttyUSB0  (for  USB adapter ) or  /dev/ttyAMA0  (connected to the  GPIO pins  of RPi)**** LogLevel: 0 (set it to ZERO) DataFilesPath: /usr/local/etc/ GroupsFile: groups.txt DMRidFile: stripped.csv Reboot your hotspot.

Este é um pequeno script shell que pode ser utilizado para atualizar o arquivos de DMR id's e mostrar nas telas Nextion, ou outras, normalmente utilizando com NextionDriver (normalmente ele não vem instalado na instalação padrão do Pi-Star. Necessário consultar este link ) /etc/crontab 12 0 * * * root /bin/bash /root/DMRIupdate.sh #! /bin/bash ############################################################################### # # DMRIDUpdate.sh # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU Gen...