### - **COMMUNICATIONS-ELECTRONICS FUNDAMENTALS Wave Propagation, Transmission Lines, and Antennas**

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### - **TACTICAL SINGLE- CHANNEL RADIO COMMUNICATIONS TECHNIQUES**

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The SO-50 (Saudi-OSCAR 50) satellite is a popular satellite among amateur radio operators worldwide. Launched on December 20, 2002, SO-50 is one of the most accessible amateur radio satellites in Low Earth Orbit (LEO), providing a reliable platform for satellite communication. This article explores the key features of SO-50, how to access it, and tips for making your first contact.

### Overview of

Single Sideband (SSB) modulation is a highly efficient and widely used mode of communication in the ham radio world, especially for long-distance (DX) contacts on HF bands. Understanding its benefits and why it’s preferred by many operators can help you get the most out of your station. This article explores the technical and practical advantages of SSB, demonstrating why it remains a cornerstone in amateur radio communication.

### **What is Single Sideband (SSB)?**

SSB is a form of amplitude modulation (AM) where only one of the sidebands (either upper sideband—USB, or lower

In ham radio, repeaters play a crucial role in extending the range of communication, enabling contacts over vast distances that would be difficult to achieve with simplex (direct radio-to-radio) communication. A key concept in using repeaters is the *repeater offset*, which is fundamental for ensuring smooth and efficient communication. This article provides a detailed technical explanation of repeater offsets, including how they work, why they are used, and how to correctly set them up on your radio.

### **What is a Repeater Offset?**

A repeater offset is

In the world of ham radio, reliable power is essential. As ham radio operators, we often find ourselves in remote locations where access to the electrical grid is limited or non-existent. Solar power provides an efficient and sustainable solution, allowing us to maintain continuous operations while also promoting environmental responsibility. This article delves into the technical aspects of setting up and optimizing a solar power system tailored specifically for ham radio use, focusing on equipment, system design, and efficiency.

### **Understanding Solar Power Systems**

Before

# EchoLink: A Technical Overview and User Guide

## Introduction

EchoLink is a Voice over Internet Protocol (VoIP) application designed for licensed amateur radio operators, enabling them to communicate via the internet. By bridging radio communication with internet technology, EchoLink allows users to connect with

## DIY Dipole Antenna

Building your own dipole antenna can be an enjoyable and rewarding project, whether you are an amateur radio operator or just someone interested in exploring the world of radio communications. This guide will walk you through the basics of dipole antennas, the materials you need, and step-by-step instructions to build your own.

### What is a Dipole Antenna?

A dipole antenna is one of the simplest and most effective types of antennas. It consists of two equal-length conductive elements (usually made of wire) that are oriented in opposite directions. The basic dipole antenna

### Dipole Antenna Measurement Calculator

**LINK**: https://hamlike.com/app/dipole-calculator/ -------

# **Ham Radio Filters: Essential Tools for Clear Communication**

Amateur radio, or ham radio, has long been a vital communication tool for hobbyists, emergency responders, and enthusiasts alike. A key component of any ham radio setup is the use of filters. These devices play a critical role in ensuring that your signals are as clear and interference-free as possible, while also minimizing unwanted noise and harmonics. Whether you're talking to fellow operators across town or communicating globally, using the right filters can make a world of difference in the quality of