June 11, 2018

LORAWAN Antenna SWR measurement (DIY)

Antenna Measurement The antennae available for LoRaWAN are typically ruby ducky/whip, ground plane, and fiberglass antenna. We decided to measure the SWRs using low-cost network analyzer with NWT4000-1 and then using low-cost RTL SDR from RTL-SDR.COM. NWT4000-1 Network analyzer (you could find the instrument in aliexpress.com/ebay.com/taobao.com) is a good choice for a hobbyist with a tight […]

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June 6, 2018 C:\Users\LDRA_Fish9\Downloads\IMG_20170723_200741.jpg

Walkie Talkie Module/Shield(Planning)

VHF Walkie Shield/Board This project would be self contained walkie module with touch screen with provision for external power supply.The board will be based on Dorji VHF module (Reference: 1) and will be based on Atmel Uno based architecture. TRRS 3.5 MM Design Goal: The VHF module(DRA818V) will need external audio amplifier(LM series audio amplifier […]

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May 20, 2018

DVB-T2 User Guide

DVB-T2 User Guide Version 1.2 Document Revisions Date Version Number Document Changes 17/09/2015 0.07 Initial Draft 19/09/2015 1.0 Added TV channel screen shots, test results. 09/10/2015 1.1 Updated with Bangalore DVB-T2 test transmission details. 17/10/2015 1.2 Added Advanced topics for measuring signal parameters. Table of Contents 1 Introduction 5 1.1 Scope and Purpose 5 1.2 […]

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May 20, 2018

Experimenting with J Pole Antenna

J-POLE Antenna This antenna is from  Ganiasar Wireless. The details could be found at  http://www.gangiasarwireless.com/j-pole/ frequency: 145-154 Mhz–VH1 155-164 Mhz–VH2 165-174 Mhz–VH3 Gain: 2dB Input Impedance: 50 ohm VSWR<1.5 Bandwidth 6 Mhz Radiation: Omni Maximum Input Power: 100 Watts Input Termination: SO-239 Mechanical Characteristics Connector PL-259 only (No adaptor provided) Mounting Clamps Assembly Procedure: The […]

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May 20, 2018

Threat Modelling for Automotive – Part 3

AUTOMOTIVE ETHERNET  Automotive Ethernet is a physical network that is used to connect components within a car using a wired network. It is designed to meet the needs of the automotive market, including meeting electrical requirements (EMI/RFI emissions and susceptibility), bandwidth requirements, latency requirements, synchronisation, and network management requirements. To fully meet the automotive requirements, […]

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May 20, 2018

Setting Up RADARBOX24 ADS-B Receiver

A few months ago, I have applied for the RADARBOX24  receiver and received the receiver with accessories from 3 weeks of my application.The The content of the box was RadarBox ADS-B Receiver External Fiber Glass Antenna with attached Co-axial Cable(with matching screw and bolts) Power adaptor with Cable RJ-45 Ethernet Cable Courtesy: Radarbox24 Mounting My apartment is […]

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May 20, 2018

GPS Simulation using HACKRF

How to Simulate GPS position? We need a software-defined radio like HACKRF which could simulate GPS L1 signal. The GPS position simulator used in this project is https://github.com/osqzss/gps-sdr-sim The project is compiled/executed out in windows laptop using Visual studio community edition. the GPS-sdr-sim.exe file needs to be created by creating a win32 console application and […]

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May 20, 2018

SDLC (SECURE DEVELOPMENT LIFE CYCLE)

The Microsoft Security Development Lifecycle (Microsoft SDL) is a software development process based on the spiral model, which has been proposed by Microsoft to help developers create applications or software while reducing security issues, resolving security vulnerabilities and even reducing development and maintenance costs. The process is divided into seven phases: training, requirements, design, implementation, […]

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