Wolfgang Waldner1 minRadio go boxPortable radio station Radio stations in a portable case (radio go boxes) are particularly popular as emergency radio stations. In...
Wolfgang Waldner1 minSatellite telephonesIf a secure connection is important, this technology is the first choice. A satellite telephone provides a connection for voice and / or...
Wolfgang Waldner2 minEmergency transmitterEmergency Position Indicating Radiobeacon Station (EPIRS or EPIRB) or Personal Locator Beacons (PLB), are small, portable transmitters...
Wolfgang Waldner2 minPMR - radiosPersonal Mobile Radio PMR radios are popular, and not without reason. The devices work at approx. 446 MHz (thus in the UHF range). They...
Wolfgang Waldner1 minLoRaWANLow Power Wide Area Network All possible sensors and actuators should be connected to the internet in the future. This then gives rise to...
Wolfgang Waldner1 minMesh networksMesh networks for broadband communication A meshed network is understood to be radio services that automatically select the communication...
Wolfgang Waldner1 minMorse telegraphyMorse code is still in use internationally after more than a hundred years. Many military personnel are still being trained in it. Due to...
Wolfgang Waldner2 minShortwave radio communicationShortwave connections cannot guarantee a 100% connection due to the changing propagation conditions. Nevertheless, such devices are still...