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 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 Waldner2 minRadio wave propagation (part 2)Radio signal propagation in the VHF. UHF, SHF and EHF - range VHF : Very High Frequency 30 MHz - 300 MHz UHF: Ultra High Frequency ...
Wolfgang Waldner3 minRadio wave propagation (part 1)Signal propagation in the long, middle and shortwave range LW: Low wave / frequency: 30 kHz - 300 kHz MW: Medium wave / frequency: 0,3...
Wolfgang Waldner2 minCB - radioCitizen Band in the 27 MHz - range CB radios work in the upper shortwave range at approx. 27 MHz. The radio frequencies are therefore in...
Wolfgang Waldner1 minToy radiosOnly toy radios in the PMR range come close to the properties of "full-blown" devices. Most of the time, however, the devices for the...
Wolfgang Waldner1 minAmateur radioWhen radio becomes a hobby Amateur radio operators have passed a state examination in which they have proven their knowledge of radio...
Wolfgang Waldner1 minRadio receiverWorld receivers and crank radios A radio receiver provides entertainment and information. If you are in the transmission area of FM or...
Wolfgang Waldner2 minLaptop & RadioDigital modes for datacommunications The combination of laptop and radio is now common in the outdoor area. On the one hand, the user has...
Wolfgang Waldner2 minRadiorepeatersRadio relais are located in exposed locations and are used to transmit the received signal again in order to cover a larger transmission...
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...