Essays about: "amateur radio"

Found 4 essays containing the words amateur radio.

  1. 1. Evaluating LoRa Physical as a Radio Link Technology for use in a Remote-Controlled Electric Switch System for a Network Bridge Radio-Node

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Abdullahi Aden Hassan; Rasmus Karlsson Källqvist; [2019]
    Keywords : LoRa; Emergency preparedness; Amateur radio; System design; Embedded system; Radio electronics; LoRa; Krisberedskap; Amatörradio; Systemdesign; Inbyggda system; Radioelektronik;

    Abstract : This report explores the design of a system for remotely switching electronics on and off within a range of at least 15 km, to be used with battery driven radio nodes for outdoor Wi-Fi network bridging. The application of the network bridges are connecting to remote networks, should Internet infrastructure fail during an emergency. READ MORE

  3. 2. Design of a Federated Framework for Emergency Response

    University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Author : Qasim Sarfraz; [2017]
    Keywords : ;

    Abstract : This is a feasibility study exploring the potential of using advanced e-infrastructure mechanisms for federated identity management and service provisioning to support multi-organizational emergency response efforts. The mechanisms explored are primarily similar to the EduGAIN services developed and used by the national and regional research and education network communities with the objective to support international research collaboration. READ MORE

  4. 3. VHF/UHF Uplink Solutions for Remote Wireless Sensor Networks

    University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Author : Alp Sayin; [2013]
    Keywords : ;

    Abstract : The purpose of this thesis was to compare alternative wireless links for transfer of data from sink motes of remote wireless sensor networks to a central repository. A few different protocol stacks to be implemented in the WSN (Wireless Sensor Network) uplink gateway and along with them a few implementation environments based on open source software and low-power hardware were discussed. READ MORE

  5. 4. Chirp Sounding and HF Application : SDR Technology Implementation

    University essay from Institutionen för datavetenskap, fysik och matematik, DFM

    Author : Dino Dautbegovic; [2012]
    Keywords : SDR; GNU Radio; Ionosphere; Ionosonde; GNU Chirp Sounder;

    Abstract : From a HF propagation point of view, the ionospheric layers act as partially conducting media (plasma) in which a transmitted radio wave can reflect upon.A way of determining whether a radio wave with a given frequency will reflect from the ionosphere or completely penetrate is to utilize special radar instruments know as ionosondes or chirp sounders. READ MORE